diff --git a/flags/yu.svg b/flags/yu.svg
new file mode 100644
index 0000000..93c3d8c
--- /dev/null
+++ b/flags/yu.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="512" height="512" viewBox="0 0 512 512"><mask id="a"><circle cx="256" cy="256" r="256" fill="#fff"/></mask><g mask="url(#a)"><path fill="#eee" d="m0 167 256-32 256 32v178l-256 32L0 345Z"/><path fill="#d80027" d="M0 345h512v167H0Z"/><path fill="#0052b4" d="M0 0h512v167H0Z"/><path fill="#ffda44" d="m137 413 309-222H66l309 222L256 51Z"/><path fill="#d80027" d="m183 350 189-136H140l188 136-72-221z"/></g></svg>
\ No newline at end of file
diff --git a/gallery.md b/gallery.md
index 32d0b59..0b9b507 100644
--- a/gallery.md
+++ b/gallery.md
@@ -368,6 +368,7 @@
   <div><img src="flags/ye.svg" width="96"/><p>Yemen (<code>ye</code>)</p></div>
   <div><img src="flags/yorubaland.svg" width="96"/><p>Yorubaland</p></div>
   <div><img src="flags/yt.svg" width="96"/><p>Mayotte (<code>yt</code>)</p></div>
+  <div><img src="flags/yu.svg" width="96"/><p>Yugoslavia (<code>yu</code>)</p></div>
   <div><img src="flags/za.svg" width="96"/><p>South Africa (<code>za</code>)</p></div>
   <div><img src="flags/zm.svg" width="96"/><p>Zambia (<code>zm</code>)</p></div>
   <div><img src="flags/zw.svg" width="96"/><p>Zimbabwe (<code>zw</code>)</p></div>