Christina Tosi is an American chef and cookbook author. She is founder and co-owner with Momofuku of Milk Bar and serves as its chef and chief executive officer. Food & Wine magazine included her in their 2014 list of "Most Innovative Women in Food and Drink".

She is the author of several cookbooks. She has served as a judge on the reality competition "MasterChef" and presented for the Netflix series "Bake Squad". She has won two James Beard Foundation awards. She created Milk Bar Pie and Cereal Milk.

Tosi studied electrical engineering for one year at the University of Virginia and graduated from James Madison University with degrees in applied mathematics and Italian, then enrolled in the French Culinary Institute's pastry arts program. While attending culinary school she worked as a host at Aquagrill, eventually being promoted to maître d’hotel.

Milk Bar first opened its doors on November 15, 2008. When they first opened, Milk Bar had a team of only five people and were often open for 16 hours a day. Tosi's approach was to use pastry chef techniques to create comfort-food influenced desserts served in a casual setting.She serves as Milk Bar's chef and chief executive officer.

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