Roger John Leonard Sumich (born 12 November 1955) is a New Zealand retired cyclist.

He represented his native country at the 1984 Summer Olympics.

[1] Sumich won the bronze medal in the same event at the 1982 Commonwealth Games in Brisbane, Australia.

Sumich won and set the fastest time in the amateur Goulburn to Sydney Classic in 1983 run from Goulburn to Liverpool.

This biographical article relating to New Zealand cycling is a stub.