Riparia is a genus of passerine birds in the swallow family Hirundinidae.

1/ Grey-throated martin grey-throated martin or Asian plain martin (Nhạn nâu đỏ, Riparia chinensis)

Brown-throated martin or brown-throated sand martin (Nhạn họng nâu, Riparia paludicola)
The specific epithet paludicola is Latin meaning "marsh-dweller" (from palus, paludis meaning "swamp" and -cola meaning "dweller".
Used to include the grey-throated martin or Asian plain martin[1] (Riparia chinensis).

2/ Sand martin (Nhạn nâu xám, Riparia riparia), also known as the bank swallow (in the Americas), collared sand martin, or common sand martin

Hirundinidae is from the Latin Hirundo for a swallow.
The genus name Riparia is from the Latin riparius which means "of the riverbank"; it is derived from the Latin ripa "riverbank".