Manuel Alonso may refer to:
Manuel Alonso Areizaga (1895–1984), Spanish tennis player Manuel A. Alonso (1822–1889), Puerto Rican poet Manuel Alonso Corral (1934–2011), Spanish antipope Manuel Alonso Martínez (1827–1891), Spanish jurist and politician Manuel Alonso (cyclist), said in one source to have won the 1989 Vuelta a Murcia; other sources say it was Marino Alonso