Martinus van Regteren Altena

Martinus van Regteren Altena (19 September 1866 - 10 October 1908) was a Dutch portrait painter, etcher and lithographer.

Born in Amsterdam, he was a son of Johan Quirijn van Regteren Altena (1832–1915), director of the Deli Maatschappij, and Gerardina Maria Jonker (1836–1910), making him brother to the painter Marie van Regteren Altena and uncle to the art historian Iohan Quirijn van Regteren Altena.

He initially studied at Delft Technical University, gaining a diploma as a building engineer.

He studied from 1891 to 1894 at the Rijksakademie van beeldende kunsten in Amsterdam under Wilhelmus Hendrikus Petrus Johannes de Zwart.

He lived and worked in Amsterdam from 1891 to 1894, Laren (Noord-Holland) until 1902, Bussum until 1906, then in Nunspeet, where he died of tuberculosis.