Rai Khing (Thai: ไร่ขิง, pronounced [râj kʰǐŋ]) is a tambon (subdistrict) of Sam Phran district, Nakhon Pathom province, western outskirts Bangkok.

Most of the general characteristics are vast plains with fertile land, and have good irrigation conditions with Tha Chin River as the main water resource emptying through and can be branched into 20 tributaries.

The subdistrict is crossed by Phutthamonthon Sai 6 Road (Highway 3316) that runs along Tha Chin River meander in the northwest of the area.

Air-conditioned bus route 84 runs from Krung Thon Buri BTS Station in Bangkok to the destination at Wat Rai Khing.

While air-conditioned bus route 556 runs from nearby Don Wai Market and terminates at Bobae in Bangkok, passed in front of Wat Rai Khing as well.