| Nong Fak | |
| Native Name: | หนองฟัก |
| Address: | Tambon Thung Bua, Amphoe Kamphaeng Saen, Nakhon Pathom Province,  Thailand |
| Line: | Suphanburi Line |
| Structure: | At grade |
| Platform: | 1 (unused) |
| Tracks: | 1 |
| Closed: | ? |
| Owned: | State Railway of Thailand |
| Former: | Thung Khwang |
| Other Services Header: | Former services |
Nong Fak halt (Thai: ที่หยุดรถหนองฟัก), original name Thung Khwang halt (Thai: ที่หยุดรถทุ่งขวาง) was a railway station on the Suphanburi Line located in Tambon Thung Bua, Amphoe Kamphaeng Saen, Nakhon Pathom Province, Thailand. There was only one platform, on the east side of the track. The station is now closed and no trains stop at it.
Nong Fak was originally named Thung Khwang.