Challenge Cup | Challenge Tour | Challenge Anneka | University Challenge | Millennium Challenge Corporation | Diamond Challenge Sculls | USA Pro Cycling Challenge | TNA World Tag Team Championship | TAG Heuer | Challenge | The Great Indian Laughter Challenge | tag team | Infinite Challenge | WWE Tag Team Championship | WRU Challenge Cup | World Club Challenge | Tag Team (group) | Tag Team | Sa Re Ga Ma Pa Challenge 2005 | Real World/Road Rules Challenge: Fresh Meat | Grand Challenge Cup | Fletcher Challenge | FIRST Tech Challenge | Extra Challenge | WWE Tag Team Championship (2002–2010) | Ultimate Poker Challenge | The Man and the Challenge | Rachel's Challenge | Power Challenge | Intercontinental Rally Challenge |
Also inspired by the DARPA Network Challenge, a contest called Tag Challenge was sponsored by the United States Department of State and the Institute of International Education.