Leonard may refer to:
- Leonard Boardman, a Havenite politician.
- Leonard Detweiler, the founding father of Mesa.
- the Leonard Detweiler-class, named after the former.
- Leonard Masterman, a Havenite diplomat.
- Leonard Shumate, Earl of Thompson, a Manticoran politician.
- Leonard Silvowitz, a Seraphim businessman and resistance fighter.
- Leonard Sullivan, an officer of the Grayson Space Navy.
- the Leonard Medal, a Manticoran military decoration.