diff --git a/changelog.d/s3_sink_add_glacier_ir_storage_class.enhancement.md b/changelog.d/s3_sink_add_glacier_ir_storage_class.enhancement.md
new file mode 100644
index 0000000000000..6c452a71a6652
--- /dev/null
+++ b/changelog.d/s3_sink_add_glacier_ir_storage_class.enhancement.md
@@ -0,0 +1,3 @@
+A new `GLACIER_IR` option was added to `storage_class` for `aws_s3` sink.
+
+authors: MikeHsu0618
diff --git a/src/sinks/s3_common/config.rs b/src/sinks/s3_common/config.rs
index 503a8eb3e159b..9db7fc506191a 100644
--- a/src/sinks/s3_common/config.rs
+++ b/src/sinks/s3_common/config.rs
@@ -167,6 +167,9 @@ pub enum S3StorageClass {
     /// Glacier Flexible Retrieval.
     Glacier,
 
+    /// Glacier Instant Retrieval.
+    GlacierIr,
+
     /// Glacier Deep Archive.
     DeepArchive,
 }
@@ -181,6 +184,7 @@ impl From<S3StorageClass> for StorageClass {
             S3StorageClass::ExpressOnezone => Self::ExpressOnezone,
             S3StorageClass::OnezoneIa => Self::OnezoneIa,
             S3StorageClass::Glacier => Self::Glacier,
+            S3StorageClass::GlacierIr => Self::GlacierIr,
             S3StorageClass::DeepArchive => Self::DeepArchive,
         }
     }
@@ -393,6 +397,7 @@ mod tests {
         for &(name, storage_class) in &[
             ("DEEP_ARCHIVE", S3StorageClass::DeepArchive),
             ("GLACIER", S3StorageClass::Glacier),
+            ("GLACIER_IR", S3StorageClass::GlacierIr),
             ("INTELLIGENT_TIERING", S3StorageClass::IntelligentTiering),
             ("EXPRESS_ONEZONE", S3StorageClass::ExpressOnezone),
             ("ONEZONE_IA", S3StorageClass::OnezoneIa),
diff --git a/website/cue/reference/components/sinks/base/aws_s3.cue b/website/cue/reference/components/sinks/base/aws_s3.cue
index 7c20ac233286c..dad1875884fc6 100644
--- a/website/cue/reference/components/sinks/base/aws_s3.cue
+++ b/website/cue/reference/components/sinks/base/aws_s3.cue
@@ -1074,6 +1074,7 @@ base: components: sinks: aws_s3: configuration: {
 				DEEP_ARCHIVE:        "Glacier Deep Archive."
 				EXPRESS_ONEZONE:     "High Performance (single Availability zone)."
 				GLACIER:             "Glacier Flexible Retrieval."
+				GLACIER_IR:          "Glacier Instant Retrieval."
 				INTELLIGENT_TIERING: "Intelligent Tiering."
 				ONEZONE_IA:          "Infrequently Accessed (single Availability zone)."
 				REDUCED_REDUNDANCY:  "Reduced Redundancy."