Brett Frank Geymann (born December 8, 1961) is a businessman from Lake Charles, Louisiana, who is a Republican member of the Louisiana House of Representatives from District 35 in Calcasieu and Beauregard parishes.Geymann is a native of Lake Charles who later moved to Beauregard Parish. He graduated from South Beauregard High School. Geymann holds a Bachelor of Science degree in finance from McNeese State University in Lake Charles.