Krathum Rai (, ) is a khwaeng (subdistrict) of Nong Chok District, in Bangkok, Thailand. In 2020, it had a total population of 40,146 people.
Its name Krathum Rai literally meaning "surrounded by burflower-trees" (Krathum in Thai). The area is considered the centre of the district. Where the important utilities and buildings are located, such as Nong Chok District Office, Wetchakarunrasm Hospital (Nong Chok Hospital), Nong Chok Park, Nong Chok Public Library, etc.
Krathum Rai is served by BMTA bus no. 131 and affiliated bus no. 1-59 (526).