John Philip "Trink" Trinkaus (23 May 1918, Rockville Centre, New York – 8 February 2003, Guilford, Connecticut) was an American embryologist and one of the world's leading experts on in vivo cell motility.
In 1941 he matriculated at Johns Hopkins University, but WW II interrupted his graduate study.
In the spring of 1943 he went on leave for a week to marry Galina Gorokhoff, whom he had met a few years earlier at the Marine Biological Laboratory in Woods Hole.
Though he used dye-stains and transmission electron microscopy, many of his research publications were based on simple photomicrographic images of the teleost eggs.
Through observation and dissection, Trinkaus became an expert on the developmental processes occurring within the eggs.