200 m: 20.80 (Fukuroi 2012) Masashi Eriguchi (江里口 匡史, Eriguchi Masashi, born 17 December 1988 in Kikuchi, Kumamoto) is a retired Japanese sprinter who specialized in the 100 metres.

At the 2009 World Championships, he finished fourth in the relay.

He reached the semi-final at the 2010 World Indoor Championships.

[1] His personal best times are 6.75 seconds in the 60 metres (indoor), achieved at the 2010 World Indoor Championships in Doha; 10.07 seconds in the 100 metres, achieved in June 2009 in Hiroshima; and 20.88 seconds in the 200 metres, achieved in October 2008 in Ōita.

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