diff --git a/src/libraries/System.Text.Json/gen/JsonSourceGenerator.Parser.cs b/src/libraries/System.Text.Json/gen/JsonSourceGenerator.Parser.cs
index ae38bf43c3b497..bbdd17bddb8c22 100644
--- a/src/libraries/System.Text.Json/gen/JsonSourceGenerator.Parser.cs
+++ b/src/libraries/System.Text.Json/gen/JsonSourceGenerator.Parser.cs
@@ -196,7 +196,7 @@ public Parser(Compilation compilation, in JsonSourceGenerationContext sourceGene
                 _stringType = _metadataLoadContext.Resolve(SpecialType.System_String);
 
                 _dateTimeOffsetType = _metadataLoadContext.Resolve(typeof(DateTimeOffset));
-                _byteArrayType = _metadataLoadContext.Resolve(typeof(byte[]));
+                _byteArrayType = _metadataLoadContext.Resolve(typeof(byte)).MakeArrayType();
                 _guidType = _metadataLoadContext.Resolve(typeof(Guid));
                 _uriType = _metadataLoadContext.Resolve(typeof(Uri));
                 _versionType = _metadataLoadContext.Resolve(typeof(Version));
diff --git a/src/libraries/System.Text.Json/gen/Reflection/MetadataLoadContextInternal.cs b/src/libraries/System.Text.Json/gen/Reflection/MetadataLoadContextInternal.cs
index 15020ec6ea6217..e04adf3c21c308 100644
--- a/src/libraries/System.Text.Json/gen/Reflection/MetadataLoadContextInternal.cs
+++ b/src/libraries/System.Text.Json/gen/Reflection/MetadataLoadContextInternal.cs
@@ -3,6 +3,7 @@
 
 using System.Collections;
 using System.Collections.Generic;
+using System.Diagnostics;
 using System.Linq;
 using System.Reflection;
 using System.Runtime.CompilerServices;
@@ -20,7 +21,13 @@ public MetadataLoadContextInternal(Compilation compilation)
             _compilation = compilation;
         }
 
-        public Type? Resolve(Type type) => Resolve(type.FullName!);
+        public Compilation Compilation => _compilation;
+
+        public Type? Resolve(Type type)
+        {
+            Debug.Assert(!type.IsArray, "Resolution logic only capable of handling named types.");
+            return Resolve(type.FullName!);
+        }
 
         public Type? Resolve(string fullyQualifiedMetadataName)
         {
diff --git a/src/libraries/System.Text.Json/gen/Reflection/TypeWrapper.cs b/src/libraries/System.Text.Json/gen/Reflection/TypeWrapper.cs
index 71ea983e90ab13..5d4d778bc6348d 100644
--- a/src/libraries/System.Text.Json/gen/Reflection/TypeWrapper.cs
+++ b/src/libraries/System.Text.Json/gen/Reflection/TypeWrapper.cs
@@ -281,6 +281,11 @@ public override Type GetElementType()
             return _elementType;
         }
 
+        public override Type MakeArrayType()
+        {
+            return _metadataLoadContext.Compilation.CreateArrayTypeSymbol(_typeSymbol).AsType(_metadataLoadContext);
+        }
+
         public override EventInfo GetEvent(string name, BindingFlags bindingAttr)
         {
             throw new NotImplementedException();
diff --git a/src/libraries/System.Text.Json/tests/System.Text.Json.SourceGeneration.Tests/ContextClasses.cs b/src/libraries/System.Text.Json/tests/System.Text.Json.SourceGeneration.Tests/ContextClasses.cs
index ef79671ba640ea..24559eb6c86a54 100644
--- a/src/libraries/System.Text.Json/tests/System.Text.Json.SourceGeneration.Tests/ContextClasses.cs
+++ b/src/libraries/System.Text.Json/tests/System.Text.Json.SourceGeneration.Tests/ContextClasses.cs
@@ -31,6 +31,7 @@ public interface ITestContext
         public JsonTypeInfo<RealWorldContextTests.MyNestedClass> MyNestedClass { get; }
         public JsonTypeInfo<RealWorldContextTests.MyNestedClass.MyNestedNestedClass> MyNestedNestedClass { get; }
         public JsonTypeInfo<object[]> ObjectArray { get; }
+        public JsonTypeInfo<byte[]> ByteArray { get; }
         public JsonTypeInfo<string> String { get; }
         public JsonTypeInfo<(string Label1, int Label2, bool)> ValueTupleStringInt32Boolean { get; }
         public JsonTypeInfo<RealWorldContextTests.ClassWithEnumAndNullable> ClassWithEnumAndNullable { get; }
diff --git a/src/libraries/System.Text.Json/tests/System.Text.Json.SourceGeneration.Tests/MetadataAndSerializationContextTests.cs b/src/libraries/System.Text.Json/tests/System.Text.Json.SourceGeneration.Tests/MetadataAndSerializationContextTests.cs
index 7e83f1ae37feaa..81513b46499a70 100644
--- a/src/libraries/System.Text.Json/tests/System.Text.Json.SourceGeneration.Tests/MetadataAndSerializationContextTests.cs
+++ b/src/libraries/System.Text.Json/tests/System.Text.Json.SourceGeneration.Tests/MetadataAndSerializationContextTests.cs
@@ -22,6 +22,7 @@ namespace System.Text.Json.SourceGeneration.Tests
     [JsonSerializable(typeof(MyTypeWithPropertyOrdering))]
     [JsonSerializable(typeof(MyIntermediateType))]
     [JsonSerializable(typeof(HighLowTempsImmutable))]
+    [JsonSerializable(typeof(byte[]))]
     [JsonSerializable(typeof(RealWorldContextTests.MyNestedClass))]
     [JsonSerializable(typeof(RealWorldContextTests.MyNestedClass.MyNestedNestedClass))]
     [JsonSerializable(typeof(object[]))]
diff --git a/src/libraries/System.Text.Json/tests/System.Text.Json.SourceGeneration.Tests/MetadataContextTests.cs b/src/libraries/System.Text.Json/tests/System.Text.Json.SourceGeneration.Tests/MetadataContextTests.cs
index a9932ede2bf80b..f83a2fc923421b 100644
--- a/src/libraries/System.Text.Json/tests/System.Text.Json.SourceGeneration.Tests/MetadataContextTests.cs
+++ b/src/libraries/System.Text.Json/tests/System.Text.Json.SourceGeneration.Tests/MetadataContextTests.cs
@@ -24,6 +24,7 @@ namespace System.Text.Json.SourceGeneration.Tests
     [JsonSerializable(typeof(RealWorldContextTests.MyNestedClass), GenerationMode = JsonSourceGenerationMode.Metadata)]
     [JsonSerializable(typeof(RealWorldContextTests.MyNestedClass.MyNestedNestedClass), GenerationMode = JsonSourceGenerationMode.Metadata)]
     [JsonSerializable(typeof(object[]), GenerationMode = JsonSourceGenerationMode.Metadata)]
+    [JsonSerializable(typeof(byte[]), GenerationMode = JsonSourceGenerationMode.Metadata)]
     [JsonSerializable(typeof(string), GenerationMode = JsonSourceGenerationMode.Metadata)]
     [JsonSerializable(typeof((string Label1, int Label2, bool)), GenerationMode = JsonSourceGenerationMode.Metadata)]
     [JsonSerializable(typeof(RealWorldContextTests.ClassWithEnumAndNullable), GenerationMode = JsonSourceGenerationMode.Metadata)]
@@ -66,6 +67,7 @@ public override void EnsureFastPathGeneratedAsExpected()
             Assert.Null(MetadataWithPerTypeAttributeContext.Default.MyNestedClass.SerializeHandler);
             Assert.Null(MetadataWithPerTypeAttributeContext.Default.MyNestedNestedClass.SerializeHandler);
             Assert.Null(MetadataWithPerTypeAttributeContext.Default.ObjectArray.SerializeHandler);
+            Assert.Null(MetadataWithPerTypeAttributeContext.Default.ByteArray.SerializeHandler);
             Assert.Null(MetadataWithPerTypeAttributeContext.Default.SampleEnum.SerializeHandler);
             Assert.Null(MetadataWithPerTypeAttributeContext.Default.String.SerializeHandler);
             Assert.Null(MetadataWithPerTypeAttributeContext.Default.ValueTupleStringInt32Boolean.SerializeHandler);
@@ -103,6 +105,7 @@ public override void EnsureFastPathGeneratedAsExpected()
     [JsonSerializable(typeof(RealWorldContextTests.MyNestedClass))]
     [JsonSerializable(typeof(RealWorldContextTests.MyNestedClass.MyNestedNestedClass))]
     [JsonSerializable(typeof(object[]))]
+    [JsonSerializable(typeof(byte[]))]
     [JsonSerializable(typeof(string))]
     [JsonSerializable(typeof((string Label1, int Label2, bool)))]
     [JsonSerializable(typeof(RealWorldContextTests.ClassWithEnumAndNullable))]
@@ -168,6 +171,7 @@ public override void EnsureFastPathGeneratedAsExpected()
             Assert.Null(MetadataContext.Default.MyNestedClass.SerializeHandler);
             Assert.Null(MetadataContext.Default.MyNestedNestedClass.SerializeHandler);
             Assert.Null(MetadataContext.Default.ObjectArray.SerializeHandler);
+            Assert.Null(MetadataContext.Default.ByteArray.SerializeHandler);
             Assert.Null(MetadataContext.Default.SampleEnum.SerializeHandler);
             Assert.Null(MetadataContext.Default.String.SerializeHandler);
             Assert.Null(MetadataContext.Default.ValueTupleStringInt32Boolean.SerializeHandler);
diff --git a/src/libraries/System.Text.Json/tests/System.Text.Json.SourceGeneration.Tests/MixedModeContextTests.cs b/src/libraries/System.Text.Json/tests/System.Text.Json.SourceGeneration.Tests/MixedModeContextTests.cs
index 0cb5cf13d5e9b3..060db030bcadab 100644
--- a/src/libraries/System.Text.Json/tests/System.Text.Json.SourceGeneration.Tests/MixedModeContextTests.cs
+++ b/src/libraries/System.Text.Json/tests/System.Text.Json.SourceGeneration.Tests/MixedModeContextTests.cs
@@ -25,6 +25,7 @@ namespace System.Text.Json.SourceGeneration.Tests
     [JsonSerializable(typeof(RealWorldContextTests.MyNestedClass), GenerationMode = JsonSourceGenerationMode.Serialization)]
     [JsonSerializable(typeof(RealWorldContextTests.MyNestedClass.MyNestedNestedClass), GenerationMode = JsonSourceGenerationMode.Serialization)]
     [JsonSerializable(typeof(object[]), GenerationMode = JsonSourceGenerationMode.Metadata)]
+    [JsonSerializable(typeof(byte[]), GenerationMode = JsonSourceGenerationMode.Metadata)]
     [JsonSerializable(typeof(string), GenerationMode = JsonSourceGenerationMode.Metadata | JsonSourceGenerationMode.Serialization)]
     [JsonSerializable(typeof((string Label1, int Label2, bool)), GenerationMode = JsonSourceGenerationMode.Metadata | JsonSourceGenerationMode.Serialization)]
     [JsonSerializable(typeof(RealWorldContextTests.ClassWithEnumAndNullable), GenerationMode = JsonSourceGenerationMode.Metadata | JsonSourceGenerationMode.Serialization)]
@@ -68,6 +69,7 @@ public override void EnsureFastPathGeneratedAsExpected()
             Assert.NotNull(MixedModeContext.Default.MyNestedClass.SerializeHandler);
             Assert.NotNull(MixedModeContext.Default.MyNestedNestedClass.SerializeHandler);
             Assert.Null(MixedModeContext.Default.ObjectArray.SerializeHandler);
+            Assert.Null(MixedModeContext.Default.ByteArray.SerializeHandler);
             Assert.Null(MixedModeContext.Default.SampleEnum.SerializeHandler);
             Assert.Null(MixedModeContext.Default.String.SerializeHandler);
             Assert.NotNull(MixedModeContext.Default.ValueTupleStringInt32Boolean.SerializeHandler);
diff --git a/src/libraries/System.Text.Json/tests/System.Text.Json.SourceGeneration.Tests/RealWorldContextTests.cs b/src/libraries/System.Text.Json/tests/System.Text.Json.SourceGeneration.Tests/RealWorldContextTests.cs
index 8348e7c0df8e4e..ee891562fffee7 100644
--- a/src/libraries/System.Text.Json/tests/System.Text.Json.SourceGeneration.Tests/RealWorldContextTests.cs
+++ b/src/libraries/System.Text.Json/tests/System.Text.Json.SourceGeneration.Tests/RealWorldContextTests.cs
@@ -639,6 +639,19 @@ public virtual void SerializeObjectArray_SimpleTypes_WithCustomOptions()
             Assert.Equal("\"World\"", world.GetRawText());
         }
 
+        [Fact]
+        public virtual void SerializeByteArray()
+        {
+            byte[] value = new byte[] { 1, 2, 3 };
+            const string expectedJson = "\"AQID\"";
+
+            string actualJson = JsonSerializer.Serialize(value, DefaultContext.ByteArray);
+            Assert.Equal(expectedJson, actualJson);
+
+            byte[] arr = JsonSerializer.Deserialize(actualJson, DefaultContext.ByteArray);
+            Assert.Equal(value, arr);
+        }
+
         [Fact]
         public virtual void HandlesNestedTypes()
         {
diff --git a/src/libraries/System.Text.Json/tests/System.Text.Json.SourceGeneration.Tests/SerializationContextTests.cs b/src/libraries/System.Text.Json/tests/System.Text.Json.SourceGeneration.Tests/SerializationContextTests.cs
index 0c9079a259e39c..57f663e8b36339 100644
--- a/src/libraries/System.Text.Json/tests/System.Text.Json.SourceGeneration.Tests/SerializationContextTests.cs
+++ b/src/libraries/System.Text.Json/tests/System.Text.Json.SourceGeneration.Tests/SerializationContextTests.cs
@@ -25,6 +25,7 @@ namespace System.Text.Json.SourceGeneration.Tests
     [JsonSerializable(typeof(RealWorldContextTests.MyNestedClass))]
     [JsonSerializable(typeof(RealWorldContextTests.MyNestedClass.MyNestedNestedClass))]
     [JsonSerializable(typeof(object[]))]
+    [JsonSerializable(typeof(byte[]))]
     [JsonSerializable(typeof(string))]
     [JsonSerializable(typeof((string Label1, int Label2, bool)))]
     [JsonSerializable(typeof(RealWorldContextTests.ClassWithEnumAndNullable))]
@@ -62,6 +63,7 @@ internal partial class SerializationContext : JsonSerializerContext, ITestContex
     [JsonSerializable(typeof(RealWorldContextTests.MyNestedClass), GenerationMode = JsonSourceGenerationMode.Serialization)]
     [JsonSerializable(typeof(RealWorldContextTests.MyNestedClass.MyNestedNestedClass), GenerationMode = JsonSourceGenerationMode.Serialization)]
     [JsonSerializable(typeof(object[]), GenerationMode = JsonSourceGenerationMode.Serialization)]
+    [JsonSerializable(typeof(byte[]), GenerationMode = JsonSourceGenerationMode.Serialization)]
     [JsonSerializable(typeof(string), GenerationMode = JsonSourceGenerationMode.Serialization)]
     [JsonSerializable(typeof((string Label1, int Label2, bool)), GenerationMode = JsonSourceGenerationMode.Serialization)]
     [JsonSerializable(typeof(RealWorldContextTests.ClassWithEnumAndNullable), GenerationMode = JsonSourceGenerationMode.Serialization)]
@@ -100,6 +102,7 @@ internal partial class SerializationWithPerTypeAttributeContext : JsonSerializer
     [JsonSerializable(typeof(RealWorldContextTests.MyNestedClass), GenerationMode = JsonSourceGenerationMode.Serialization)]
     [JsonSerializable(typeof(RealWorldContextTests.MyNestedClass.MyNestedNestedClass), GenerationMode = JsonSourceGenerationMode.Serialization)]
     [JsonSerializable(typeof(object[]), GenerationMode = JsonSourceGenerationMode.Serialization)]
+    [JsonSerializable(typeof(byte[]), GenerationMode = JsonSourceGenerationMode.Serialization)]
     [JsonSerializable(typeof(string), GenerationMode = JsonSourceGenerationMode.Serialization)]
     [JsonSerializable(typeof((string Label1, int Label2, bool)), GenerationMode = JsonSourceGenerationMode.Serialization)]
     [JsonSerializable(typeof(RealWorldContextTests.ClassWithEnumAndNullable), GenerationMode = JsonSourceGenerationMode.Serialization)]
@@ -149,6 +152,7 @@ public override void EnsureFastPathGeneratedAsExpected()
             Assert.NotNull(SerializationContext.Default.MyNestedClass.SerializeHandler);
             Assert.NotNull(SerializationContext.Default.MyNestedNestedClass.SerializeHandler);
             Assert.Null(SerializationContext.Default.ObjectArray.SerializeHandler);
+            Assert.Null(SerializationContext.Default.ByteArray.SerializeHandler);
             Assert.Null(SerializationContext.Default.String.SerializeHandler);
             Assert.NotNull(SerializationContext.Default.ValueTupleStringInt32Boolean.SerializeHandler);
             Assert.NotNull(SerializationContext.Default.ClassWithEnumAndNullable.SerializeHandler);
@@ -451,6 +455,7 @@ public override void EnsureFastPathGeneratedAsExpected()
             Assert.NotNull(SerializationWithPerTypeAttributeContext.Default.MyNestedClass.SerializeHandler);
             Assert.NotNull(SerializationWithPerTypeAttributeContext.Default.MyNestedNestedClass.SerializeHandler);
             Assert.Null(SerializationWithPerTypeAttributeContext.Default.ObjectArray.SerializeHandler);
+            Assert.Null(SerializationWithPerTypeAttributeContext.Default.ByteArray.SerializeHandler);
             Assert.Null(SerializationWithPerTypeAttributeContext.Default.SampleEnum.SerializeHandler);
             Assert.Null(SerializationWithPerTypeAttributeContext.Default.String.SerializeHandler);
             Assert.NotNull(SerializationWithPerTypeAttributeContext.Default.ValueTupleStringInt32Boolean.SerializeHandler);