diff --git a/contributing.md b/contributing.md
index 72b9f14eb67..699b468ea69 100644
--- a/contributing.md
+++ b/contributing.md
@@ -348,6 +348,10 @@ Please follow the style of the existing codebase.
- For Python code, Apache Spark follows
PEP 8 with one exception:
lines can be up to 100 characters in length, not 79.
+- For R code, Apache Spark follows
+Google's R Style Guide with three exceptions:
+lines can be up to 100 characters in length, not 80, there is no limit on function name but it has a initial
+lower case latter and S4 objects/methods are allowed.
- For Java code, Apache Spark follows
Oracle's Java code conventions.
Many Scala guidelines below also apply to Java.
diff --git a/site/contributing.html b/site/contributing.html
index 78f228ae93d..fe0f3d2de4a 100644
--- a/site/contributing.html
+++ b/site/contributing.html
@@ -592,6 +592,10 @@ Code Style Guide
For Python code, Apache Spark follows
PEP 8 with one exception:
lines can be up to 100 characters in length, not 79.
+ For R code, Apache Spark follows
+Google’s R Style Guide with three exceptions:
+lines can be up to 100 characters in length, not 80, there is no limit on function name but it has a initial
+lower case latter and S4 objects/methods are allowed.
For Java code, Apache Spark follows
Oracle’s Java code conventions.
Many Scala guidelines below also apply to Java.