戴夫·马斯泰恩（Dave Mustaine，1961年9月13日－），全名大卫·斯科特·马斯泰恩（David Scott Mustaine），美国重金属乐队麦加帝斯（Megadeth）的吉他手、歌手、主要曲作家。也曾经是金属乐队的主音吉他手和曲作家之一。

马斯泰恩出生于加州拉梅萨，在南加州多个区长大，现居加州福尔布鲁克。

2009年乔尔·麦基弗（Joel McIver）所着《最伟大的100名金属吉他手》一书中，马斯泰恩排名第一位。

David Scott "Dave" Mustaine (born September 13, 1961) is an American musician, singer, songwriter, actor and author. He is best known as the co-founder, guitarist, and lead singer of the American thrash metal band Megadeth, and well known as the original lead guitarist for the American thrash metal band Metallica.