diff --git a/ext/groonga/rb-grn-column.c b/ext/groonga/rb-grn-column.c
index 9092422d..d84f9ad5 100644
--- a/ext/groonga/rb-grn-column.c
+++ b/ext/groonga/rb-grn-column.c
@@ -2,6 +2,7 @@
 /* vim: set sts=4 sw=4 ts=8 noet: */
 /*
   Copyright (C) 2009-2015  Kouhei Sutou <kou@clear-code.com>
+  Copyright (C) 2016  Masafumi Yokoyama <yokoyama@clear-code.com>
 
   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
@@ -753,6 +754,45 @@ rb_grn_column_get_indexes (int argc, VALUE *argv, VALUE self)
     return rb_indexes;
 }
 
+/*
+ * Return all indexes on `column`.
+ *
+ * @overload all_indexes
+ * @return [Array<index_column>] All indexes on `column`.
+ *
+ * @since 6.0.0
+ */
+static VALUE
+rb_grn_column_get_all_indexes (VALUE self)
+{
+    grn_ctx *context;
+    grn_obj *column;
+    grn_index_datum *index_data = NULL;
+    int i, n_indexes;
+    VALUE rb_indexes;
+
+    rb_grn_column_deconstruct(SELF(self), &column, &context,
+                              NULL, NULL,
+                              NULL, NULL, NULL);
+
+    rb_indexes = rb_ary_new();
+    n_indexes = grn_column_get_all_index_data(context, column, NULL, 0);
+    if (n_indexes == 0)
+        return rb_indexes;
+
+    index_data = xmalloc(sizeof(grn_index_datum) * n_indexes);
+    n_indexes = grn_column_get_all_index_data(context, column,
+                                              index_data, n_indexes);
+    for (i = 0; i < n_indexes; i++) {
+        VALUE rb_index;
+        rb_index = GRNOBJECT2RVAL(Qnil, context, index_data[i].index, GRN_FALSE);
+        rb_ary_push(rb_indexes, rb_index);
+        grn_obj_unlink(context, index_data[i].index);
+    }
+    xfree(index_data);
+    return rb_indexes;
+}
+
 /*
  * Renames the column to name.
  * @since 1.3.0
@@ -813,6 +853,7 @@ rb_grn_init_column (VALUE mGrn)
                      rb_grn_column_with_weight_p, 0);
 
     rb_define_method(rb_cGrnColumn, "indexes", rb_grn_column_get_indexes, -1);
+    rb_define_method(rb_cGrnColumn, "all_indexes", rb_grn_column_get_all_indexes, 0);
 
     rb_define_method(rb_cGrnColumn, "rename", rb_grn_column_rename, 1);
 
diff --git a/test/test-column.rb b/test/test-column.rb
index 17d03ea8..58b677ee 100644
--- a/test/test-column.rb
+++ b/test/test-column.rb
@@ -1,4 +1,5 @@
 # Copyright (C) 2009-2013  Kouhei Sutou <kou@clear-code.com>
+# Copyright (C) 2016  Masafumi Yokoyama <yokoyama@clear-code.com>
 #
 # This library is free software; you can redistribute it and/or
 # modify it under the terms of the GNU Lesser General Public
@@ -584,4 +585,36 @@ def test_indexed
       assert_equal(["title1"], select.call)
     end
   end
+
+  class AllIndexedTest < self
+    def setup
+      super
+      Groonga::Schema.define do |schema|
+        schema.create_table("Comments") do |table|
+          table.short_text("title")
+        end
+      end
+      @title = Groonga["Comments.title"]
+    end
+
+    def test_nothing
+      assert_equal([], @title.all_indexes)
+    end
+
+    def test_one_index
+      Groonga::Schema.define do |schema|
+        schema.create_table("Terms",
+                            :type => :patricia_trie,
+                            :default_tokenizer => "TokenBigram") do |table|
+          table.index("Comments.title")
+        end
+      end
+      assert_equal([Groonga["Terms.Comments_title"]],
+                   @title.all_indexes)
+    end
+
+    def test_multiple_indexes
+      # TODO
+    end
+  end
 end