Peter Levin
Peter Levin is an American director of film, television and theatre.
Howard W. Koch
Howard Winchel Koch( April 11, 1916 – February 16, 2001) was an American producer and director of film and television.
Rachel Feldman
Rachel Feldman( born August 22, 1954) is an American director of film and television and screenwriter of television films.
J. Sasikumar
Nambiathusseril Varkey John( 14 October 1927 – 17 July 2014), better known by his screen name Sasikumar, was an Indian film director who worked in Malayalam cinema.
One of the most prolific directors in world cinema, he has directed more than 141 films in his career which began in the mid-1960s.
He is often referred to as Hitmaker Sasikumar due to the commercial success of his films.
Sasikumar holds three world records: the records for most films( 141), most films having the same actor as hero( Prem Nazir in 84 films) and the most films directed in a year( 15 films in 1977).
He died in 2014 at the age of 86.
Riffraff (1936 film)
Riffraff is a 1936 American film starring Jean Harlow and Spencer Tracy.
The movie was written by Frances Marion, Anita Loos, and H. W. Hannaford, and directed by J. Walter Ruben.
Panchavadi
Panchavadi is a 1973 Indian Malayalam film, directed by J. Sasikumar and produced by VM Chandi.
The film stars Prem Nazir, Vijayasree, Adoor Bhasi, Jose Prakash and T. S. Muthaiah in lead roles.
The film had musical score by M. K. Arjunan.
Brian Johnson (special effects artist)
Brian Johnson( born 1939 or 1940) is a British designer and director of film and television special effects.
Ian Barry (director)
Ian Barry is an Australian director of film and TV.
Hanro Smitsman
Hanro Smitsman, born in 1967 in Breda( Netherlands), is a writer and director of film and television.
J. Walter Ruben
Jacob Walter Ruben( August 14, 1899 – September 4, 1942) was an American screenwriter, film director and producer.
He wrote for 35 films between 1926 and 1942.
He also directed 19 films between 1931 and 1940.
His great- grandson is actor Hutch Dano.
He was born in New York City and died in Hollywood.
He is interred at Glendale's Forest Lawn Memorial Park Cemetery.

Question: Do director of film Panchavadi and director of film Riffraff (1936 film) have the same nationality?
Answer: no