SeatGeek is a New York City-headquartered ticketing platform, founded in 2009 by Russell D’Souza and Jack Groetzinger, enabling users to buy and sell tickets for live sports, concerts, and theater events. Originally launched as an aggregator for the secondary ticketing market, the company significantly evolved to become a direct competitor to Ticketmaster by operating as a primary ticketing provider for teams and venues.

The platform now manages ticketing for numerous high-profile clients, including several NFL and NBA teams, the majority of English Premier League clubs like Liverpool F.C. and Manchester City F.C., major venues such as AT&T Stadium, and Broadway's Jujamcyn Theaters. SeatGeek made its pivotal entry into the primary ticketing market in 2016 with a league-wide agreement with Major League Soccer, further expanding its reach by becoming an NFL distribution partner in 2018. This strategic growth, supported by substantial venture funding, solidified its position as a major player in the global ticketing industry.