Sean Sherman (born 1974) is an American Oglala Lakota Sioux chef, cookbook author, forager, and promoter of Indigenous cuisine. Sherman founded the Indigenous Food Lab, catering service The Sioux Chef, and founded the nonprofit North American Traditional Indigenous Food Systems (NĀTIFS). He received a James Beard Foundation Leadership Award and his 2017 cookbook, The Sioux Chef's Indigenous Kitchen, won the 2018 James Beard Award for Best American Cookbook. In 2022, Owamni won the James Beard Award for Best New Restaurant.

Sherman was born in 1974 and grew up on his grandparents' ranch on the Pine Ridge reservation in South Dakota. He hunted and foraged from an early age, recalling his grandfather giving him a shotgun on his seventh birthday. He grew up eating many government commodity foods such as cereal, shortening, and canned hash, which he cites as the norm he seeks to depart from. He attended Black Hills State University. His grandparents were fluent in Lakota.

Sherman got his first restaurant job washing dishes at 13, soon moving onto the line. He spent a summer working for the US Forest Service in the Black Hills, identifying plants. He spent most of his twenties working in a series of Minneapolis restaurants and by 27 was working as an executive chef. By 29 he was burnt out and spent some time in Mexico regrouping; while in Puerto Vallarta he spent time with some Huichol people and had an "epiphany", saying: "After seeing how the Huicholes held onto so much of their pre-European culture through artwork and food, I recognized I wanted to know my own food heritage. What did my ancestors eat before the Europeans arrived on our lands?”

In 2014 Sherman founded Indigenous food education business and caterer The Sioux Chef. The Washington Post called it "a homonym to another... culinary concept", the sous-chef. In 2015, he launched Tatanka Truck, a food truck that offered such dishes as bison wild rice and teas made from cedar and maple.

He founded the nonprofit North American Traditional Indigenous Food Systems (NĀTIFS) in 2017.

In 2017 Sherman co-authored The Sioux Chef's Indigenous Kitchen, published by the University of Minnesota, which won the 2018 James Beard Award for Best American Cookbook. In order to create the book's recipes, he interviewed older community members and searched archives for descriptions of traditional Lakota foods. Recipes in the book contain no dairy, wheat, beef, pork, or cane sugar, as these are non-Indigenous ingredients, brought to North America by European colonizers. Sherman describes the recipes as "hyperlocal, ultraseasonal, uber-healthy [and] most of all, it's utterly delicious." Publishers Weekly called the book, "an illuminating guide to Native American food that will enthrall home cooks and food historians alike." That same year he prepared a six-course dinner at the James Beard House.

In 2018 he participated in a National Museum of American History roundtable at the Food History weekend event. During the event he prepared a traditional dish, Mag˘áksic˘a na Psíŋ Wasná, duck and wild rice pemmican.

In 2019 Sherman received a James Beard Foundation Leadership Award, which recognizes people and organizations that "(work) to change our food world for the better."