Brittany Louise Pettersen is an American politician serving as the U.S. representative from Colorado's 7th congressional district since 2023. She previously served as a member of the Colorado Senate from the 22nd district, and in the Colorado House of Representatives, representing the 28th district. She is a member of the Democratic Party.

Colorado's 7th congressional district is a congressional district in the U.S. state of Colorado. Formerly located only in the northeast part of the state, the district now encompasses the western parts of the Denver metropolitan area, including Golden, Lakewood, Arvada and Broomfield, along with the central Colorado counties of Jefferson, Park, Teller, Lake, Chaffee, Fremont, and Custer.