Fazenda Santo Antônio Airport is a small private airstrip located near Joviânia, a municipality in the state of Goiás, Brazil. It primarily serves agricultural and general aviation operations associated with the fazenda (farm or ranch estate) it belongs to. The airstrip holds the ICAO designator SI1W and has no assigned IATA code, reflecting its status as a non-commercial, private facility. Like many fazenda airstrips across Brazil's interior, it supports light aircraft used for farm management, cargo transport, and personal travel in a region where road infrastructure can be limited.