1989 | 2 Episodes

Season 0 of Whose Line Is It Anyway? premiered on March 9, 1989.

1988 | 13 Episodes

Season 1 of Whose Line Is It Anyway? premiered on September 23, 1988.

1989 | 17 Episodes

Season 2 of Whose Line Is It Anyway? premiered on November 10, 1989.

1991 | 17 Episodes

Season 3 of Whose Line Is It Anyway? premiered on January 18, 1991.

1992 | 13 Episodes

Season 4 of Whose Line Is It Anyway? premiered on January 24, 1992.

1993 | 9 Episodes

Season 5 of Whose Line Is It Anyway? premiered on March 5, 1993.

1994 | 11 Episodes

Season 6 of Whose Line Is It Anyway? premiered on July 1, 1994.

1995 | 12 Episodes

Season 7 of Whose Line Is It Anyway? premiered on July 28, 1995.

1996 | 14 Episodes

Season 8 of Whose Line Is It Anyway? premiered on July 12, 1996.

1997 | 19 Episodes

Season 9 of Whose Line Is It Anyway? premiered on July 10, 1997.

1998 | 11 Episodes

Season 10 of Whose Line Is It Anyway? premiered on November 11, 1998.