Gouichi Motomura (本村 剛一, Motomura Gōichi) (born 25 December 1973) is a retired Challenger tour and Japan Davis Cup team tennis player. Over a 16-year period, Motomura captured four Challenger titles, all in doubles, and is tied for the most Davis Cup ties played by a Japanese player, with 23. His career high singles ranking is World No. 134 and doubles ranking is World No. 159.