Full cast of Cosmos

Neil deGrasse Tyson

Self - Host

26 episodes

Ann Druyan

26 episodes

Carl Sagan

Self (archive footage) / Self (voice) (archive footage)

8 episodes

Seth MacFarlane

President Harry S. Truman (voice) / (voice) / Giordano Bruno (voice) / Sherwood Rowland (voice)

4 episodes

Sasha Sagan

Rachel Molly Gruber

3 episodes

Stoney Emshwiller

Guard (voice)

2 episodes

André Sogliuzzo

Weichelberger (voice) / Christopher Wren (voice)

2 episodes

Christopher Emerson

Acolyte (voice)

2 episodes

Piotr Michael

Edmund Muskie (voice) / Lab Assistant (voice)

2 episodes

Enn Reitel

Henry Norris Russell (voice)

2 episodes

Keythe Farley

(voice)

2 episodes

Patrick Stewart

William Herschel (voice)

2 episodes

Elizardo Torrez

Young Carl Sagan

2 episodes

Trang Vo

Birthmark Woman / (voice)

2 episodes

John Steven Rocha

Bellaramine (voice)

1 episode

Paul Telfer

Angry Scholar #2 (voice)

1 episode

Jonathan Morgan Heit

John Herschel (voice)

1 episode

Cary Elwes

Edmond Halley / Robert Hooke (voice)

1 episode

Tom Konkle

Samuel Pepys (voice)

1 episode

Alexander Siddig

Isaac Newton (voice)

1 episode

Alfred Molina

Ibn al-Haytham (voice)

1 episode

Richard Gere

Clair Patterson (voice)

1 episode

Marc Worden

Harrison Brown (voice)

1 episode

Kirsten Dunst

Cecilia Payne (voice)

1 episode

Marlee Matlin

Annie Jump Cannon (voice)

1 episode

Peggy Jo Jacobs

Margaret Harwood (voice)

1 episode

Amanda Seyfried

Marie Tharp (voice)

1 episode

Christiane Amanpour

Enheduanna (voice)

1 episode

Michael Chochol

Jan Oort

1 episode

Oliver Vaquer

Joseph von Fraunhofer (voice)

1 episode

Fred Tatasciore

Democritus (voice)

1 episode

Larry Cedar

1 episode

Nick Jameson

1 episode

Michael McConnohie

1 episode

Masasa Moyo

1 episode

Maria Frucci

1 episode

Martin Jarvis

Humphry Davy (voice)

1 episode

Noah Langford

(voice)

1 episode

Fay Masterson

(voice)

1 episode

Heiko Obermöller

Einstein's Father (voice)

1 episode

Julian Ovenden

Michael Faraday (voice)

1 episode

Jack Rainsford

(voice)

1 episode

Glenn Steinbaum

Bruce Heezen (voice)

1 episode

William Salyers

(voice)

1 episode

Paul Sorvino

Augustin Mouchot (voice)

1 episode

Eliza Schneider

(voice)

1 episode

Frank Baxter

Self (archive footage)

1 episode

John F. Kennedy

Self (voice) (archive footage)

1 episode

Masoumeh Husseini

Monk (voice)

1 episode

Harssh A. Singh

Ashoka (voice)

1 episode

Nick Sagan

1 episode

Clinnette Minnis

1 episode

Shereen Balles

Female Voyager (voice)

1 episode

Kapeneta Te'o-Tafiti

Male Voyager (voice)

1 episode

Joseph Grange

John Herschel (voice)

1 episode

Carol Bach Rita

Caroline Herschel (voice)

1 episode

Viggo Mortensen

Nikolai Vavilov (voice)

1 episode

Ken Lally

(voice)

1 episode

Phil Crowley

(voice)

1 episode

Yuri Lowenthal

(voice)

1 episode

Edita Brychta

(voice)

1 episode

Christopher Lee Parson

(voice)

1 episode

Andrew Pifko

(voice)

1 episode

Brendan Bradley

(voice)

1 episode

Matthew Jayson Cwern

(voice)

1 episode

Alan Shearman

(voice)

1 episode

Natasha Goubskaya

(voice)

1 episode

Skye Sammoutis

(voice)

1 episode

Marcelo Tubert

(voice)

1 episode

Mara Junot

(voice)

1 episode

Rick Pasqualone

(voice)

1 episode

Elijah Braik

(voice)

1 episode

Novi Brown

(voice)

1 episode

Jamie Hanes

1 episode

Will Greenburg

John Goodricke

1 episode

Dex de Groot

1 episode

Joep Fellinger

1 episode

Steve Oatway

Charles Darwin

1 episode

Adam Tsekhman

Christiaan Huygens

1 episode

Neil Arnote

Neil Armstrong

1 episode

Ernie Vigil

Thomas Young

1 episode

Judd Hirsch

Robert Oppenheimer (voice)

1 episode

Olivia D'Abo

Marie Curie (voice)

1 episode

Yurika Okamura

(voice)

1 episode

Selyna Chan

(voice)

1 episode

Sianna Chan

(voice)

1 episode

Joseph J. Micucci

Young Father

1 episode

Lennard Ortmann

Albert Einstein

1 episode

Alex Bartram

Samuel Sagan

1 episode

Brannon Braga

World's Fair Attendee

1 episode

Marcello Guedes

Young Neil deGrasse Tyson

1 episode

Leandro Guedes

Young Stephen Joseph Tyson

1 episode