- Alfred Lyon Leiffer
- Charles Leiffer
- Charles Michael Leiffer
- Edith Rubin Leiffer
- Ethlyn Poplavsky Leiffer
- Gillie Leiffer
- Howard Leiffer
- Issac Leiffer
- Leonard Sheldon Leiffer
- Liba Leiffer
- Louis Leiffer
- Mary Clara Leiffer
- Nathan Leiffer
- Samuel Leiffer
- Sophie Leiffer