Muhammad Aizat bin Amdan (born 21 January 1989) or commercially known as Aizat Amdan, or Ai.Z, is a Malaysian singer-songwriter.
Aizat began his music career as a contestant in the 5th season of Malaysian reality TV singing contest Akademi Fantasia A while after the contest ended, Aizat surprised the Malaysian public and his fans with his new look, managing to lose 30 kg from a previous 112 kg.
Aizat is well known for inducing creative sounds and lyrical prose within his songs. He describes his music as a mixture of pop rock and alternative music influenced by Britpop.
In 2007, Aizat released two of his singles entitled "Hanya Kau Yang Mampu" and "Sahabat". "Hanya Kau Yang Mampu" was a major hit in Malaysia earning it the title of the Most Downloaded song in 2009 at Anugerah Planet Muzik. Since then Aizat has released two albums Percubaan Pertama and Urusan Aizat Amdan.