Directed by Richard Wallace
Written by Bordan Chase, C.E. Scoggins and John Twist
Produced by Stephen Ames
Cinematography by W. Howard Greene and Harry J. Wilde
Distributed by RKO Pictures
Drama / Adventure / Romance
John Wayne as Johnny Munroe
Laraine Day as Maura Alexander Munroe
Sir Cedric Hardwicke as Frederick Alexander
Judith Anderson as Miss Braithwaite
James Gleason as Pop Mathews
Anthony Quinn as Ricky Vegas
Grant Withers as Fog Harris
Paul Fix as Joe
Fernando Alvarado as Chico
Harry Woods as Holden
Michael Harvey as Curly Messenger
Charles Trowbridge as Señor Tobar
Martin Garralaga as Chávez
Young and brash engineer Johnny Munroe is working to finish a dangerous tunnel for a railroad through the Peruvian Andes Mountains. Johnny risks his professional career to pursue a forbidden love affair with Maura Alexander, the daughter of the tycoon who is bankrolling the project. After a disastrous tunnel collapse, Johnny risks it all in a dramatic race against time to finish the railroad before the violent rainy seasons come.
Tycoon was RKO’s most expensive movie, costing 3.209 million, and was a commercial flop, losing 1.035 million.
Originally Maureen O'Hara was to play the female lead in the film; however, she was assigned to Sinbad the Sailor (1947) instead.
Tycoon used Lone Pine, California to represent the Peruvian Andes.
Part of the massive RKO budget was used to create the mock railroad and train tunnel. RKO built a fake mountain for the filming of Tycoon.