The Manhattan Project

The Manhattan Project Cast

56 cast members · 25 with popularity data

Most Popular The Manhattan Project Cast Members

John Lithgow is currently the most popular The Manhattan Project cast member online with a Attention Score of 2.6. Updated July 16, 2026.

Lt. Col. Conroy

Richard Jenkins

Radiation Controls Officer

Robert Sean Leonard

Background (uncredited)

Laser Efficiency Kid (as Richard Cardona)

Jill Eikenberry

Elizabeth Stephens

#13,660 overall

Science Teacher

#13,898 overall

#14,866 overall

#14,889 overall

Timothy Carhart

#18,112 overall

#18,878 overall

#21,753 overall

C-4 Guy (uncredited)

#23,564 overall

Robert Schenkkan

Government Aide

#26,050 overall

Christopher Collet

#31,007 overall

#32,076 overall

Eccles (as John David Cullum)

#32,682 overall

#43,099 overall

#48,617 overall

#52,077 overall

Richard Council

Government Aide

#56,122 overall

#56,638 overall

#63,956 overall

Roland (as Abe Unger)

Geoffrey Nauffts

Katherine Hiler

Harlan Cary Poe

Jenny's Brother

Jenny's Brother

Conroy's Lieutenant

Price (as Charlie Fields)

Heather Rose Dominic

Bruce Smolanoff

Injection Doctor

FBI (as Alec Massey)

Edward D. Murphy

Barbara Collins - TV Reporter

Helicopter Pilot

Michael Telesco

Day Security Receptionist

Richard Caselnova

Frank Ferrara Sr.

Jimmie Ray Weeks

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