里奥加耶戈斯（西班牙语：Río Gallegos）是阿根廷圣克鲁斯省的首府，座落在加耶戈斯河的入海口，人口约80,000，海拔20米，距离布宜诺斯艾利斯2,636公里。

Río Gallegos (Spanish pronunciation: [ˈri.o ɣaˈʃeɣos]) is the capital and largest settlement of the Patagonian province of Santa Cruz in Argentina. Located in the department of Guer Aike, it has a population of about 98,000, according to the 2010 census[INDEC], a 24% increase from the 79,000 in the 2001 census[INDEC]. The city bears the name of the Gallegos River, and sits on its estuary 2,636 km (1,638 mi) south from the Argentinian federal capital Buenos Aires.