diff --git a/libcst/metadata/accessor_provider.py b/libcst/metadata/accessor_provider.py
index 5d4f22e42..8fe506090 100644
--- a/libcst/metadata/accessor_provider.py
+++ b/libcst/metadata/accessor_provider.py
@@ -6,6 +6,8 @@
 
 import dataclasses
 
+from typing import Sequence
+
 import libcst as cst
 
 from libcst.metadata.base_provider import VisitorMetadataProvider
@@ -15,5 +17,9 @@ class AccessorProvider(VisitorMetadataProvider[str]):
     def on_visit(self, node: cst.CSTNode) -> bool:
         for f in dataclasses.fields(node):
             child = getattr(node, f.name)
-            self.set_metadata(child, f.name)
+            if isinstance(child, cst.CSTNode):
+                self.set_metadata(child, f.name)
+            elif isinstance(child, Sequence):
+                for idx, subchild in enumerate(child):
+                    self.set_metadata(subchild, f.name + "[" + str(idx) + "]")
         return True
diff --git a/libcst/metadata/tests/test_accessor_provider.py b/libcst/metadata/tests/test_accessor_provider.py
index 6ccfad5ee..8905bcc22 100644
--- a/libcst/metadata/tests/test_accessor_provider.py
+++ b/libcst/metadata/tests/test_accessor_provider.py
@@ -7,6 +7,8 @@
 
 from textwrap import dedent
 
+from typing import Sequence
+
 import libcst as cst
 from libcst.metadata import AccessorProvider, MetadataWrapper
 from libcst.testing.utils import data_provider, UnitTest
@@ -22,8 +24,13 @@ def on_visit(self, node: cst.CSTNode) -> bool:
         for f in dataclasses.fields(node):
             child = getattr(node, f.name)
             if type(child) is cst.CSTNode:
-                accessor = self.get_metadata(AccessorProvider, child)
+                accessor = self.get_metadata(AccessorProvider, child, None)
                 self.test.assertEqual(accessor, f.name)
+            elif isinstance(child, Sequence):
+                for idx, subchild in enumerate(child):
+                    if type(subchild) is cst.CSTNode:
+                        accessor = self.get_metadata(AccessorProvider, subchild, None)
+                        self.test.assertEqual(accessor, f.name + "[" + str(idx) + "]")
 
         return True