The Asian house martin (Delichon dasypus) is a migratory passerine bird of the swallow family Hirundinidae.

The Asian house martin feeds on small insects taken in flight, usually caught high in the air.

The Asian house martin was first formally described from a bird collected in Borneo by French naturalist and ornithologist Charles Lucien Bonaparte in 1850 as Chelidon dasypus,[2][3] shortly before it was moved to the new genus Delichon by British entomologist Frederic Moore and American naturalist Thomas Horsfield in 1854.

The juvenile bird is less glossy and has dark brown upperparts, sometimes with a brownish wash to the rump, and grey-white underparts.

[10] The nominate subspecies of the Asian house martin, D. d. dasypus, breeds in the southeast of Russia, the Kuril Islands, Japan and sometimes Korea.

It migrates through eastern China to winter in the Malay Peninsula, Borneo, the Philippines, Java and Sumatra; a few birds remain around hot springs in Japan.

D. d. cashmeriensis breeds in the Himalayas from Afghanistan east to Sikkim and northwards into Tibet and western and central China.

[13] The preferred habitat of the Asian house martin is valleys and gorges in mountainous areas or coastal cliffs, where natural caves or crevices provide nest sites.

[7] This martin tends to move to lower altitude open or hilly country in its wintering areas, although it has been recorded at up to 2,565 m (8,415 ft) in Thailand.

As with its relatives it tends to feed high in the air, taking mostly small flies, aphids and Hymenoptera such as winged ants.

Since the range is more than 20,000 square kilometres (7,700 sq mi), and there are more than 10,000 mature individuals, in the absence of any large decline in distribution or numbers the species does not appear to meet the criteria to be considered vulnerable, and is currently evaluated as Least Concern by the IUCN.