Jan de Boer (29 August 1898 – 30 June 1988)[2][3] was a Dutch association football player, who played as a goalkeeper for Ajax and the Netherlands national team.

Nine years later, under coach Jack Reynolds, De Boer was able to replace former first team goalkeeper Jan Smit in goal.

[5] After 1933 De Boer remained active at Ajax, playing as an outfield player for Ajax 6, one of the club's amateur teams playing in the lower leagues of the Netherlands.

[6] De Boer received several call-ups for the Dutch national team, but was only capped a total of five times between 1923 and 1924.

[8] Outside of his football career, De Boer was responsible for the Ajax brand of fire extinguishers, which he helped develop that were later marketed and sold worldwide.