San Secondo may refer to:
San Secondo, Città di Castello, a frazione of the comune of Città di Castello, Italy San Secondo, Magnano, a church in the province of Biella, Italy San Secondo Parmense, a comune in the province of Parma, Italy San Secondo di Pinerolo, a comune in the province of Turin, Italy Isola di San Secondo, a deserted island in the Venetian Lagoon, Italy
See also Secundus (disambiguation), the Latin name of several Catholic saints