diff --git a/flags/yu.svg b/flags/yu.svg
new file mode 100644
index 0000000..d347499
--- /dev/null
+++ b/flags/yu.svg
@@ -0,0 +1 @@
+<svg data-name="Layer 1" xmlns="http://www.w3.org/2000/svg" width="512" height="512"><defs><mask id="a" x="0" y="0" width="512" height="512" maskUnits="userSpaceOnUse"><circle cx="256" cy="256" r="256" fill="#fff"/></mask></defs><g mask="url(#a)"><path d="m0 166.9 253-26.7L512 167v178l-261.1 26L0 344.8V166.9Z" fill="#eee"/><path d="M0 344.9h512V512H0V344.9Z" fill="#d80027"/><path d="M0 0h512v166.9H0V0Z" fill="#0052b4"/><path d="m256 88.9 36.199 111.395 117.129.005-94.757 68.85 36.19 111.399L256 311.705l-94.762 68.844 36.19-111.398-94.756-68.85 117.13-.006L256 88.901Z" fill-rule="evenodd" fill="#d80027"/><path d="M371.683 409.344 256 325.302l-115.683 84.042 44.18-135.992-115.675-84.05 142.988-.006L256 53.308l44.191 135.988 142.988.006-115.677 84.05 44.18 135.992ZM256 298.108l73.84 53.646-28.2-86.805 73.838-53.65-91.271-.004L256 124.493l-28.207 86.802-91.27.004 73.837 53.65-28.201 86.805L256 298.108Z" fill="#ffda44"/></g></svg>
\ No newline at end of file
diff --git a/gallery.md b/gallery.md
index c50144a..8133e5d 100644
--- a/gallery.md
+++ b/gallery.md
@@ -365,6 +365,7 @@
   <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>