diff --git a/core/src/main/java/org/apache/iceberg/puffin/StandardBlobTypes.java b/core/src/main/java/org/apache/iceberg/puffin/StandardBlobTypes.java
index ce78375c4b1a..d916fc46e94b 100644
--- a/core/src/main/java/org/apache/iceberg/puffin/StandardBlobTypes.java
+++ b/core/src/main/java/org/apache/iceberg/puffin/StandardBlobTypes.java
@@ -27,6 +27,12 @@ private StandardBlobTypes() {}
    */
   public static final String APACHE_DATASKETCHES_THETA_V1 = "apache-datasketches-theta-v1";
 
+  /**
+   * A serialized form of a KLL sketch, a very compact quantiles sketch, produced by the <a
+   * href="https://datasketches.apache.org/">Apache DataSketches</a> library
+   */
+  public static final String APACHE_DATASKETCHES_KLL_SKETCH = "apache-datasketches-kll-v1";
+
   /** A serialized deletion vector according to the Iceberg spec */
   public static final String DV_V1 = "deletion-vector-v1";
 }
diff --git a/format/puffin-spec.md b/format/puffin-spec.md
index 62e8ae085398..da28c4c497bd 100644
--- a/format/puffin-spec.md
+++ b/format/puffin-spec.md
@@ -181,6 +181,15 @@ for Puffin v1.
 [roaring-bitmap-portable-serialization]: https://github.com/RoaringBitmap/RoaringFormatSpec?tab=readme-ov-file#extension-for-64-bit-implementations
 [roaring-bitmap-general-layout]: https://github.com/RoaringBitmap/RoaringFormatSpec?tab=readme-ov-file#general-layout
 
+#### `apache-datasketches-kll-v1` blob type
+
+A serialized form of a KLL sketch, a very compact quantiles sketch, produced by the 
+[Apache DataSketches](https://datasketches.apache.org/) library.
+KLL quantiles sketch is a mergeable streaming algorithm to estimate 
+the distribution of values, and approximately answer queries about the rank of a value, 
+probability mass function of the distribution (PMF) or histogram, 
+cumulative distribution function (CDF), and quantiles (median, min, max, 95th percentile and such)
+
 ### Compression codecs
 
 The data can also be uncompressed. If it is compressed the codec should be one of