Onno Reint Alberda van Ekenstein

Onno Reint Alberda van Ekenstein (; 3 February 1752 – 21 October 1821) was a Dutch nobleman who served in the States General and the Senate. He bore the title of .

Biography Alberda van Ekenstein was born in 1752 in Groningen. His parents were Onno Joost Alberda van Ekenstein and Anna Maria Hora. He married Maria Albertina van Berchuys (1750–1819) on 5 July 1772 in Groningen.

A Knight of the Order of the Netherlands Lion, Alberda van Ekenstein served on the Provincial Executive of Groningen and Ommelanden and as a delegate to the audit office of the Dutch Republic. Besides, he was on the board of supervisors of the University of Groningen. On 28 August 1814, he was appointed to the Knighthood of Groningen, an electoral college of noblemen, upon its establishment, and he would later serve as its president. The States General were split into the House of Representatives and Senate in September 1815, and Alberda van Ekenstein became a pro-government member of the latter. He died on 21 October 1821 in his family estate in Tjamsweer near Appingedam while still a senator.