Henri ("Harry") Léonard Barthélémi Dénis (28 August 1896 – 13 July 1971) was a football defender from the Netherlands, who represented his home country at three consecutive Summer Olympics, starting in 1920.

[1][2] Dénis started playing football with local side DVV and joined HBS aged 11.

He would stay at the club for the rest of his career, winning the 1925 Netherlands Football League Championship with them.

[3] At his Olympic debut in Antwerp, Belgium he won the bronze medal with the Netherlands national football team, followed by a fourth place four years later in Paris, France.

Dénis obtained a total number of 56 caps for the Netherlands, in which he was captain in 37 matches.