Who Was That Lady?
- Tahun: 1960
- Negara: United States of America
- Genre: Comedy, Romance
- Studio: Columbia Pictures, Ansark-Sidney
- Kata kunci: undercover, fbi, fake id, chemistry professor
- Pengarah: George Sidney
- Pelakon: Tony Curtis, Dean Martin, Janet Leigh, James Whitmore, John McIntire, Barbara Nichols