Adrianus Jacobus "Janus" Braspennincx (5 March 1903 in Zundert – 7 January 1977 in Breda) was a Dutch racing cyclist who competed in the 1928 Summer Olympics.

In the 1928 Summer Olympics, he won a silver medal as part of the Dutch pursuit team.

He finished ninth in the team road race as a member of the Dutch road racing team, after finishing 27th in the individual road race .

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