diff --git a/docs/Sponsors.md b/docs/Sponsors.md
index 70755e7cd6f2..100cf023ca0f 100644
--- a/docs/Sponsors.md
+++ b/docs/Sponsors.md
@@ -4,6 +4,16 @@ Klipper is Free Software. We depend on the generous support from
 sponsors. Please consider sponsoring Klipper or supporting our
 sponsors.
 
+## BIGTREETECH
+
+[<img src="./img/sponsors/BTT_BTT.png" width="200" />](https://bigtree-tech.com/collections/all-products)
+
+BIGTREETECH is the official mainboard sponsor of Klipper. BIGTREETECH
+is committed to developing innovative and competitive products to
+serve the 3D printing community better. Follow them on
+[Facebook](https://www.facebook.com/BIGTREETECH) or
+[Twitter](https://twitter.com/BigTreeTech).
+
 ## Klipper Developers
 
 ### Kevin O'Connor
diff --git a/docs/img/sponsors/BTT_BTT.png b/docs/img/sponsors/BTT_BTT.png
new file mode 100644
index 000000000000..141b9b2b2e52
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