Matthew Raymond "Matt" Dillon (born February 18, 1964) is an Academy Award-nominated American actor. He began acting in the late 1970s, gained fame as a teen idol during the 1980s, and developed a successful career as an adult actor in the decades following, culminating in an Oscar nomination for his performance in the film Crash.

Matt Dillon (born July 1, 1966) is a computer scientist living in Berkeley, California. He is best known for his contributions to FreeBSD and for starting the DragonFly BSD project.

Dillon studied electronic engineering and computer science at the University of California, Berkeley, where he first became involved with BSD in 1985. He also became known for his Amiga programming, his C compiler DICE and his work on the Linux kernel. He founded and worked at Best Internet from 1994 until 1997, contributing to FreeBSD in that time.

In 1997, Dillon gained commit access to the FreeBSD code and majorly contributed to the virtual memory subsystem, amongst other work.

Concerned with problems he saw in the direction FreeBSD 5.x was headed, and coupled with the fact that Dillon's access to the FreeBSD source code repository was revoked due to a falling-out with other FreeBSD developers, he started the DragonFly BSD project in 2003.