Alto Mucajaí Airport (ICAO: SJYG) is a small general aviation airstrip located in the Alto Alegre municipality of Roraima state, in northern Brazil. It serves the remote Alto Mucajaí area, which lies within or near indigenous territories in the Amazon basin. The airport has no IATA code assigned, reflecting its status as a minor, non-commercial facility. It primarily supports light aircraft operations for access to communities that lack reliable road connections in this densely forested and remote region. Air transport is essential in this part of Roraima, where river and air routes often represent the only practical means of reaching isolated settlements. The airstrip plays a logistical role for local communities, mission organizations, and government agencies operating in the area.