Geert Adriaans Boomgaard (September 21 1788 - February 3 1899) was the second internationally recognized supercentenarian in the world after Thomas Peters (1745 - 1857).

Little is known about Geert Adriaans Boomgaard's life. He was born and died in Groningen, the Netherlands. He served as a soldier in the army of Napoleon. He married on March 17 1831 to Grietje Abels Jonker.