天字第一號4:假鴛鴦
- Tahun: 1966
- Negara:
- Genre: Mystery, Crime, Romance, Action
- Studio: Chung Tin, Wan Shou Film Company
- Kata kunci: romance, female spy, spy thriller, anti-japanese war
- Pengarah: Chang Ying
- Pelakon: Pai Hung, Ko Chun-Hsiung, Lin Chi, Yang Chen, Yu Tian, Yue Chun-Ying
