| Sangduen Manwong | |
| Miss Thailand 1968 | |
| Nationalcompetition: | Miss Thailand 1968 (winner), Miss Universe 1969 (delegate) |
| Birth Place: | Bangkok, Thailand |
| Birth Name: | Sangduen Manwong |
| Birth Date: | 1949 1, mf=yes |
| Eye Color: | Black |
| Hair Color: | Black |
Sangduen Manwong (th|แสงเดือน แม้นวงศ์; ; nicknamed Toom th|ตุ๋ม; ; born January 1, 1949) is a Thai former model and beauty pageant titleholder who was crowned Miss Thailand 1968.[1] She competed in the Miss Universe 1969 pageant competition held in the United States and won best national costume.