Erich Haagensen Jaabech (6 December 1761 – 4 January 1845) was a Norwegian farmer who served as a representative at the Norwegian Constitutional Assembly.^{[1] [2]}

Jaabech was born in Usland at Øyslebø in Vest-Agder, Norway. He was the son of Haagen Olson Usland (1721-1773) and Marte Eriksdtr. Skjævesland (1731-1790). In 1788, he married Gunhild Olsdtr. Skjævesland (1763-1844) with whom he had eight children.^[3]

He was a farmer who also worked as a teacher in Øyslebø and Holum. In 1806, he bought the farm Jaabekk in Halse parish (Jåbekk gård i Halse ved Mandal) and established residence at that farm. He was also active as a trader, a blacksmith and a cooper. ^[4][5]

He was elected to the Norwegian Constituent Assembly in 1814, representing the constituency of Mandals Amt (now Vest-Agder) together with Osmund Andersen Lømsland and Syvert Omundsen Eeg. At the Assembly, all three supported the union party (unionspartiet). ^{[6] [7]}