diff --git a/.changeset/dry-glasses-worry.md b/.changeset/dry-glasses-worry.md
new file mode 100644
index 000000000..42d8031d6
--- /dev/null
+++ b/.changeset/dry-glasses-worry.md
@@ -0,0 +1,6 @@
+---
+'@vanilla-extract/css': minor
+'@vanilla-extract/recipes': minor
+---
+
+Skip class name generation in `styleVariants` when a variant's style object is empty
diff --git a/packages/css/src/style.ts b/packages/css/src/style.ts
index d2c417a1f..ff6c8b2f2 100644
--- a/packages/css/src/style.ts
+++ b/packages/css/src/style.ts
@@ -168,6 +168,7 @@ export function styleVariants(...args: any[]) {
 
     const classMap: Record<string | number, string> = {};
     for (const key in data) {
+      if (!Object.keys(data[key]).length) continue;
       classMap[key] = style(
         mapData(data[key], key),
         debugId ? `${debugId}_${key}` : key,