Karl Henrik Lorentz Reilin (16 March 1874 – 18 January 1962) was a Finnish sports shooter, who competed at the 1908 and the 1912 Summer Olympics.
He placed fifth at 300 metre rifle, 3 positions team event at the 1914 ISSF World Shooting Championships.
He and Maria Luoma were the parents of Sirkka Elisabeth (1932âÂÂ), who married Jaakko Tähtinen.