Through the end of the 2007 regular season, there have been 4 extra innings complete no hitters and no extra innings perfect games.
1) 1997 - Francisco Cordova and Ricardo Rincon of the Pittsburgh Pirates no hit the Houston Astros 3-0 in 10 innings.
2) 1965 - Jim Maloney of the Cincinnati Reds no hit the Chicago Cubs 1-0 in 10 innings.
3) 1917 - Fred Toney of the Cincinnati Reds no hit the Chicago Cubs 1-0 in 10 innings.
4) 1908 - Hooks Wiltse of the New York Giants no hit the Philadelphia Phillies 1-0 in 10 innings.
Thirteen other pitchers have pitched games where they have given up no hits through nine innings only to allow a hit in extra innings. These are not considered no hitters because they did not keep the other team hitless through the entire game.