尼扬扎省（英文：Nyanza Province）是肯尼亚8省之一，首府基苏木 (英文:Kisumu).

尼扬扎省分为18个县：

Bondo District

Borabu District

Gucha District

Homa Bay District

Kisii Central District

Kisumu East District

Kisumu West District

Kuria District

Manga District

Masaba District

Migori District

Nyamira District

Nyando District