Carter Milliken Reum (born February 5, 1981) is an American author, entrepreneur and venture capitalist. He is most notable for founding M13 Ventures, an angel investment firm. He is married to socialite Paris Hilton.
Along with his brother Courtney, Reum co-founded the alcohol brand VEEV Spirits, a company listed in Inc. Magazine's 5000 fastest growing private companies in the United States.
Reum was featured in episodes of the television series Hatched and has appeared as a guest and a commentator on a variety of networks including CBS and Fox. He is a contributing writer for Huffington Post and Inc. He is the co-founder of the investment firm M13.
In 2018, Random House and Penguin Books released Shortcut Your Startup: Ten Ways to Speed Up Entrepreneurial Success. Reum co-authored the book with his brother Courtney. The book uses the Reums' experiences to teach entrepreneurs how to reach their goals. They pull from their experiences creating Veev and from the lessons learned through the years investing in companies like SpaceX, Lyft, Pinterest and Warby Parker.
In 2016, Reum started the venture capital firm M13 Investments.
His father, Robert Reum, was chairman, president and chief executive officer of Chicago-based Amsted Industries, ranked one of United States's largest private companies ranked by Forbes.
Carter has one daughter with former actress Laura Bellizzi.