1567 Alikoski, provisional designation 1941 HN, is a large, carbonaceous asteroid from the outer region of the asteroid belt, about 68 kilometers in diameter. It was discovered by Finnish astronomer Yrjö Väisälä at Turku Observatory, southwest Finland, on 22 April 1941. The minor planet was named in honor of Finnish astronomer Heikki Alikoski (1912–1997), assistant to the discoverer from 1937 to 1956, and himself an observer and discoverer of minor planets. He also helped greatly in establishing the Turku Astronomical-Optical Institute.