Leon Ritzenthaler is an American man, notable for being the son of William Jefferson Blythe III and half-brother of former U.S. President Bill Clinton. He is a "retired owner of a janitorial service, from Northern California". (Bill Clinton, p. 5)

Bill Clinton was apparently unaware of his existence until 1993, though Ritzenthaler had previously written to Clinton.

References

• Bill Clinton (2004). My Life. Hutchinson. ISBN 0-09-179527-3.