Conrad "Conny" Heidkamp (27 September 1905 – 5 March 1994) was a German footballer who played as a defender for Düsseldorfer SC 99 and Bayern Munich.
Between 1927 and 1930, he won 9 caps with the Germany national team, scoring one goal. He was also part of Germany's team at the 1928 Summer Olympics, but he did not play in any matches.
At Bayern Munich, Heidkamp earned captaincy of the team in 1932 via victory over Eintracht Frankfurt in the final, winning the German football championship. He died in 1994 in Munich.
Heidkamp met his wife Magdalene in the spring of 1934, and she nicknamed him "grenadier" because of his shot and accuracy.
Conrad Heidkamp at National-Football-Teams.com