diff --git a/icu4c/source/.clang-format b/icu4c/source/.clang-format
new file mode 100755
index 00000000000..83cbf646a43
--- /dev/null
+++ b/icu4c/source/.clang-format
@@ -0,0 +1,11 @@
+# © 2020 and later: Unicode, Inc. and others.
+# License & terms of use: http://www.unicode.org/copyright.html
+
+---
+Language: Cpp
+BasedOnStyle: LLVM
+IndentWidth: 4
+ColumnLimit: 105
+AllowShortBlocksOnASingleLine: false 
+AllowShortIfStatementsOnASingleLine: true 
+...