Marc Jacobs (born April 9, 1963 in New York City) is an American fashion designer. He is the head designer for Marc Jacobs, as well as the diffusion line Marc by Marc Jacobs. Jacobs is currently the Creative Director of the prestigious French design house Louis Vuitton.

In 2007, Jacobs was ranked 8th on Out magazine's list of "50 Most Powerful Men and Women in America".

Jacobs, who is openly gay, was in a relationship with retired prostitute Jason Preston from 2005 until early 2008.

On March 12, 2007, Jacobs checked into rehab for treatment of drug and alcohol abuse.