Thor Reirsen Lilleholt (3 March 1770 –12 May 1822) was a Norwegian farmer and district sheriff who served as a representative at the Norwegian Constitutional Assembly.
Thor Reirsen Lilleholt was born on the Lilleholt farm in Holt parish in Aust-Agder, Norway. From 1803 to 1817, he served as sheriff in Holt, and from 1803 to 1812, he also held the position in the neighboring parish of DypvÃÂ¥g. In 1793, he married Asborg Undersdtr (1770âÂÂ1812), with whom he had five children.
He represented Nedenæs amt (now Aust-Agder) at the Norwegian Constituent Assembly in 1814, alongside Jacob Aall and Hans Jacob Grøgaard. At the Assembly, he supported the union party (unionspartiet).