Dan is a name. It refers sometimes to the short form of the name Daniel. Dan, or the acronym DAN may refer to the following:

Larry "Ler" LaLonde (born Reid Lawrence LaLonde on September 12, 1968 in Oakland, California) is a guitarist who currently plays in Primus along with Les Claypool and Jay Lane. He has also played with Possessed, Blind Illusion, No Forcefield, and the Frank Zappa tribute band "Caca".

Originally inspired by guitarists such as Frank Zappa, Snakefinger, East Bay Ray, Jerry Garcia, Jimi Hendrix, and his teacher Joe Satriani, LaLonde eventually became interested in early thrash metal bands such as Metallica and Slayer. LaLonde formed his first band in high school, a speed metal band called Blizzard. LaLonde left the band later on to join the first generation death metal band Possessed. Possessed's landmark first album, Seven Churches, was released in 1985 when LaLonde was just 17 years old.

Possessed released two less successful albums before breaking up in 1987. LaLonde then joined experimental thrash metal band Blind Illusion, appearing on the 1988 album The Sane Asylum, through which he became friends with bassist Les Claypool. At around the same time LaLonde was also a member of Corrupted Morals, with whom he recorded the album Cheese-It, released the following year. At the start of 1989, LaLonde left Blind Illusion and Corrupted Morals when Claypool invited him to reform the funk metal outfit Primus, which had been on hiatus since original guitarist Todd Huth left the previous year.

Dan Monti, also known by his stage name Del Rey Brewer, is a musician, composer, producer and engineer who has worked with such bands as Metallica, Slayer and Guns N' Roses. The bulk of his work, however, has been in conjunction with Buckethead, with whom he has also toured as a bassist.

Monti is a guitarist and bassist, frequently adding bass parts to Buckethead albums. He is also the lead guitarist for the Serj Tankian touring band The Flying Cunts of Chaos. Dan and his band mates are currently in the studio recording The F.C.C's first album, with a release date to be announced. The band released their first single called "Daysheet Blues" on iTunes. He is also the lead vocalist for The F.C.C.

Monti has been credited on many albums in his career, the first being Bucketheadland 2 in 2003. He has since gone on to produce most of Buckethead's albums. He is also credited on many of these albums as the bassist, as well co-writer and mixer. Monti has also contributed to many high profile band's albums, including Serj Tankian's solo albums. He is listed for "additional engineering" or as "assistant engineer" on Guns N' Roses recent album Chinese Democracy, on which Buckethead also featured, as well as being credited for "digital editing" on Metallica's Death Magnetic and Slayer's World Painted Blood.