Lumbaca-Unayan, officially the Municipality of Lumbaca-Unayan (Maranao: Inged a Lumbaca-Unayan; ; Arabic (Kirim): لمباكا أونايان), is a  municipality in the province of Lanao del Sur, Philippines.
Lumbaca-Unayan is a municipality situated in Lanao del Sur, Philippines. It's also known by its Maranao name (Inged a Lumbaca-Unayan) and Arabic name (لمباكا أونايان).