One Is a Lonely Number
- Tahun: 1972
- Negara: United States of America
- Aliran: Drama
- Studio: Metro-Goldwyn-Mayer
- Kata kunci: marriage, dating, divorce
- Direktur: Mel Stuart
- Pemeran: Trish Van Devere, Monte Markham, Janet Leigh, Melvyn Douglas, Jane Elliott, Jonathan Goldsmith