List of Discontinued and Cancelled Boosters

Cancelled after achieving orbit (when an entire family was cancelled only the final version is listed - date of last orbital flight)

Ariane-4 - February 15, 2003
Athena-2 - September 24, 1999
Black Arrow - October 28, 1971
Diamant-BP4 - September 27, 1975
Energia - November 15, 1988
Jupiter-C - May 24, 1961
Lambda-4 - February 11, 1970
Saturn-1b - July 15, 1975
Saturn-V - May 14, 1973
Scout-G - May 9, 1994
Titan-4 - October 19, 2005
Vanguard - September 18, 1959