2000 | 5 Episodes

Season 0 of Whose Line Is It Anyway? premiered on October 4, 2000.

1998 | 20 Episodes

Season 1 of Whose Line Is It Anyway? premiered on August 5, 1998.

1999 | 39 Episodes

Season 2 of Whose Line Is It Anyway? premiered on September 16, 1999.

2000 | 39 Episodes

Season 3 of Whose Line Is It Anyway? premiered on October 12, 2000.

2001 | 31 Episodes

Season 4 of Whose Line Is It Anyway? premiered on September 6, 2001.

2002 | 34 Episodes

Season 5 of Whose Line Is It Anyway? premiered on September 9, 2002.

2004 | 10 Episodes

Season 6 of Whose Line Is It Anyway? premiered on June 24, 2004.

2005 | 25 Episodes

Season 7 of Whose Line Is It Anyway? premiered on January 17, 2005.

2005 | 21 Episodes

Season 8 of Whose Line Is It Anyway? premiered on October 3, 2005.