Voldemar Ryndzune Vetluguin (né Ryndzyun[a]; March 8, 1897 – May 15, 1953) was a Russian-American writer, publicist, journalist and film producer.

His father, Ilya Galileevich Ryndzyun, was the owner of a local hydrotherapy facility, and his mother, Mathilda Borisovna Raivich, was a housewife.

[2] Shortly before entering the University of Moscow in 1914, at the insistence of his father, he was baptized as an Orthodox Christian.

He worked for the Moscow-based newspaper Life together with Don Aminado, who facilitated the journalist's move to Paris, and published him in his Parisian children's magazine Green Stick.

In the spring of 1922 he moved to Berlin and began working at the newspaper Nakanune, financed by the Soviet authorities.

He acquired American citizenship, changing his name to Voldemar Ryndzune Vetluguin and altering his birth year to 1894.

He continued his journalistic work all throughout his career in the film industry, publishing articles in various journals as Frederick Van Ryn.