Plaza San Martín (English: San Martín Square) is a park located in the Retiro neighbourhood of Buenos Aires, Argentina. Situated at the northern end of pedestrianized Florida Street, the park is bounded by Libertador Ave. (N), Maipú St. (W), Santa Fe Avenue (S), and Leandro Alem Av. (E). Its coordinates are 34°35′42″S 58°22′32″W.