First Avenue, 1st Avenue or 1 Av may refer to:
Streets 1st Avenue (Chicago), a major thoroughfare of the city 1st Avenue (Seattle), a street in the city's downtown First Avenue (Manhattan), a major thoroughfare in New York City
Schools First Avenue Middle School, Arcadia, California First Avenue School, Newark, New Jersey
Other uses First Avenue (nightclub), a music venue in downtown Minneapolis 1 Av, the first day of Av, the fifth month of the Hebrew calendar
See also First Avenue Records, a former record label First Avenue South Bridge in Seattle First Avenue station (PAAC) on the Port Authority of Allegheny County's light rail network First Avenue Public School, an elementary school in Ottawa, Ontario, Canada First Avenue (BMT Canarsie Line), a subway station List of highways numbered 1 First Street (disambiguation)