Peter Som (born in 1970) is an American fashion designer, born and raised in the San Francisco Bay Area.

Peter Som graduated from Connecticut College in 1993 with a degree in Art History. He continued his studies at Parsons School of Design where he apprenticed with American designers, Michael Kors and Calvin Klein. At Parsons, his talent was recognized through competitions; he won and was presented with the Parsons Gold Thimble Award by Isaac Mizrahi.

After graduating, Peter Som pursued his career as a fashion designer by working under Bill Blass as Assistant Designer in 1998. In 2001 Som created his own line and unveiled the collection with a showing at Bryant Park. In 2007, he was appointed Creative Director of women’s wear for Bill Blass. He then left the company in 2008 to concentrate on his namesake label. In 2009, Som became the Creative Consultant for Tommy Hilfiger, where he designed the women’s runway collection through to 2012.

His label is Peter Som. His collections have been featured in fashion publications including Vogue, W, Elle, Harper’s Bazaar, and InStyle. He has a clientele consisting of actresses such as Ginnifer Goodwin, Scarlett Johansson, Kate Mara, Allison Williams, Maggie Gyllenhaal, Natalie Portman, Liv Tyler, Amy Poehler, and Rashida Jones.