diff --git a/cpp/src/arrow/ipc/adapter.cc b/cpp/src/arrow/ipc/adapter.cc
index 3259980058b..40d372bbd35 100644
--- a/cpp/src/arrow/ipc/adapter.cc
+++ b/cpp/src/arrow/ipc/adapter.cc
@@ -41,7 +41,7 @@
 
 namespace arrow {
 
-namespace flatbuf = apache::arrow::flatbuf;
+namespace flatbuf = org::apache::arrow::flatbuf;
 
 namespace ipc {
 
diff --git a/cpp/src/arrow/ipc/metadata-internal.cc b/cpp/src/arrow/ipc/metadata-internal.cc
index 8cd416ff585..16ba20f7e90 100644
--- a/cpp/src/arrow/ipc/metadata-internal.cc
+++ b/cpp/src/arrow/ipc/metadata-internal.cc
@@ -37,7 +37,7 @@ typedef flatbuffers::Offset<void> Offset;
 
 namespace arrow {
 
-namespace flatbuf = apache::arrow::flatbuf;
+namespace flatbuf = org::apache::arrow::flatbuf;
 
 namespace ipc {
 
diff --git a/cpp/src/arrow/ipc/metadata-internal.h b/cpp/src/arrow/ipc/metadata-internal.h
index 871b5bc4bf6..5faa8c947b5 100644
--- a/cpp/src/arrow/ipc/metadata-internal.h
+++ b/cpp/src/arrow/ipc/metadata-internal.h
@@ -28,7 +28,7 @@
 
 namespace arrow {
 
-namespace flatbuf = apache::arrow::flatbuf;
+namespace flatbuf = org::apache::arrow::flatbuf;
 
 class Buffer;
 struct Field;
diff --git a/cpp/src/arrow/ipc/metadata.cc b/cpp/src/arrow/ipc/metadata.cc
index 4fc8ec50eb7..e510755110e 100644
--- a/cpp/src/arrow/ipc/metadata.cc
+++ b/cpp/src/arrow/ipc/metadata.cc
@@ -33,7 +33,7 @@
 
 namespace arrow {
 
-namespace flatbuf = apache::arrow::flatbuf;
+namespace flatbuf = org::apache::arrow::flatbuf;
 
 namespace ipc {