Marinus Adrianus Koekkoek, sometimes referred to as The Elder (25 September 1807 – 28 January 1868) was a 19th-century Dutch landscape and marine painter.

He was a member of the famous Koekkoek Painting Family [nl]; second son of the marine artist, Johannes Hermanus Koekkoek, brother of Barend Cornelis, Johannes [de], and Hermanus.

Marinus and his brothers received their first art lessons from their father, who provided advice and assistance throughout their careers.

He finally settled in Amsterdam in 1854, and remained there until his death, aged sixty.

He was awarded a silver medal for his landscapes from the Felix Meritis society in 1847.