 | Ben Stiller als Alex (voice) |
 | Chris Rock als Marty (voice) |
 | David Schwimmer als Melman (voice) |
 | Jada Pinkett Smith als Gloria (voice) |
 | Frances McDormand als Captain Chantel DuBois (voice) |
 | Sacha Baron Cohen als King Julien XIII (voice) |
 | Andy Richter als Mort (voice) |
 | Cedric the Entertainer als Maurice (voice) |
 | Jessica Chastain als Gia (voice) |
 | Bryan Cranston als Vitaly (voice) |
 | Martin Short als Stefano (voice) |
 | Paz Vega als Carmen (voice) |
 | Frank Welker als Sonya (voice) |
 | Tom McGrath als Skipper / First Policeman (voice) |
 | Chris Miller als Kowalski (voice) |
 | Christopher Knights als Private (voice) |
 | Conrad Vernon als Mason / Second Policeman (voice) |
 | Vinnie Jones als Freddie the Dog (voice) |
 | Steve Jones als Jonesy the Dog (voice) |
| Nick Fletcher als Frankie the Dog (voice) |
 | Danny Jacobs als Croupier / Circus Master (voice) |
 | Dan O'Connor als Casino Security / Mayor of New York City (voice) |
 | Eric Darnell als Comandante / Zoo Official / Zoo Announcer (voice) |
 | Stephen Kearin als Fourth Policeman (voice) |
| Emily Nordwind als Zoo Official (voice) |
| Asucena Jimenez als Kid in Crowd (voice) |
| Tom McGrath | Director |
| Mireille Soria | Producer |
| Eric Darnell | Director |
| Goro Fujita | Visual Development |
| Travis Koller | Visual Development |
| Eric Darnell | Screenplay |
| Bryan Gregg LaShelle | Visual Development |
| Noah Baumbach | Screenplay |
| Conrad Vernon | Director |
| Carlos Zaragoza | Set Designer |
| John Allwine | Visual Effects |
| Hans Zimmer | Original Music Composer |
| James Sathre | Lighting Technician |
| Kevin Kaska | Orchestrator |
| Mark Swift | Producer |
| Christi Soper Hilt | Casting |
| Ross Burgess | Animation |
| Jonathan Williams | Musician |
| Victor Fuste | Production Coordinator |
| Aaron Smith | CG Supervisor |
| Kirsten Drummond | Lighting Artist |
| Jonathan B. Lee | Production Coordinator |
| Aubrey Millen | Production Coordinator |
| Rachnatp | Production Supervisor |
| Ryan Genji Thomas | Production Supervisor |
| Yvonne S. Moriarty | Orchestrator |
| Renjith Chundakkad | Animation |
| Lou Dellarosa | Animation |
| Lance Fite | Animation |
| Tomoyuki Harashima | Animation |
| Prasanjib Nag | Animation |
| Chin Ko | Visual Development |
| Kyle Maxwell | Visual Effects |
| Mahesh Ramasubramanian | Visual Effects Supervisor |
| Rachel Bolt | Musician |
| Richard Quinn | Dialogue Editor |
| Aditya Deosthale | Production Supervisor |
| Alex Cardullo | Post Production Assistant |
| Brent Villalobos | Software Engineer |
| Adarsh Abraham | Lighting Artist |
| Dorien Gunnels | Lighting Artist |
| Javed Iqbal Shaikh | Lighting Artist |
| Allie Habeeb | Production Coordinator |
| Stephanie Huber | Production Coordinator |
| Rakesh S. Patil | Production Supervisor |
| Gary Summers | Sound Re-Recording Mixer |
| Andrii Trifonov | Sound Recordist |
| Geefwee Boedoe | Additional Effects Development |
| Nedy Acet | Animation |
| Maharshi Joseph | Animation |
| Manish Kumar | Animation |
| Craig Kellman | Character Designer |
| Lorne Balfe | Additional Music |
| Terri Anderson | Finance |
| Paul Clarvis | Musician |
| Gaku Nakatani | CG Supervisor |
| Rain Angeles | Systems Administrators & Support |
| Sean England | Foley |
| Jeffrey Joe | Animation |
| Yash Agrawal | Visual Effects |
| Jacob K. Melvin | Visual Effects |
| Benjamin Andersen | VFX Artist |
| Ken Ball | CG Supervisor |
| Greg Lev | CG Supervisor |
| Stanley Kwong | Lighting Artist |
| Monalisa Kar | Production Coordinator |
| Shashank Ashok Kulkarni | Production Coordinator |
| Bobbak Sabet | Production Coordinator |
| Yimi Tong | Production Coordinator |
| Ben Zaehringer | Production Coordinator |
| Ed Neumeister | Orchestrator |
| Dennis Leonard | Supervising Sound Editor |
| Bailey Brent | Animation |
| Chris Kirshbaum | Animation |
| Ron Pucherelli | Animation |
| John P. Rand | Modeling |
| Chad Hammes | Line Producer |
| Leslee Feldman | Casting |
| Swetha Madhavan | Production Coordinator |
| Darci Zalvin | Executive In Charge Of Production |
| Slamm Andrews | Music Editor |
| Ian Thomas | Musician |
| Will Files | Sound Re-Recording Mixer |
| Yoriko Ito | Production Illustrator |
| Jim Passon | Color Timer |
| Deepak Kumar | Production Coordinator |
| David Edmunds | Production Supervisor |
| Cory Rogers | Animation |
| Alex Patanjo | VFX Artist |
| Nick Fletcher | Editor |
| Ariga Parseghian | Finance |
| Vicki Hunter | Finance |
| Dan Newell | Musician |
| Bonnie Lemon | Executive In Charge Of Production |
| Nathan Schauf | First Assistant Editor |
| David Hail | Publicist |
| Nelson Brown | Animation |
| Rajesh P.K. | Animation |
| Laure Retif | Animation |
| Steve McGrath | Modeling |
| Lana Chen Sun | VFX Artist |
| Alissa Rowinsky Wright | Legal Services |
| Anisha Gupta | VFX Artist |
| Geoff Foster | Score Engineer |
| Elizabeth Himelstein | Dialect Coach |
| Bart Feliciano | Systems Administrators & Support |
| John O'Sullivan | Systems Administrators & Support |
| Allie Habeeb | Production Coordinator |
| Peer Lemmers | Animation |
| Rachel Fite | Animation |
| Stephen Timothy Cooney | VFX Artist |
| Angela Ensele | Modeling |
| Robert Kopinsky | VFX Artist |
| Bruce White | Musician |
| Sarah Jane Chin | Visual Effects Coordinator |
| Gabriel Portnof | CG Supervisor |
| Laura Gorenstein Miller | Choreographer |
| Mollie Gamo | Casting Assistant |
| Emily Nordwind | Production Supervisor |
| Ladd McIntosh | Orchestrator |
| Sebastien Wojda | Animation |
| Marty Havran | Modeling |
| Stevie Lewis | Visual Development |
| Shannon Jeffries | Art Direction |
| Mary Grace Hartline | Art Department Assistant |
| Karen L. Whitaker | Animation Department Coordinator |
| Tom Holkenborg | Additional Music |
| Sheila E. | Musician |
| Roger Linley | Musician |
| Frank Ricotti | Musician |
| Will Files | Sound Designer |
| Kevin Crandell | Visual Effects Editor |
| Claudia Southmartin | Production Manager |
| Dustin Cawood | Sound Effects Editor |
| Shajo John | Animation |
| Sean Mahoney | Animation |
| Robyne Powell | Animation |
| David Spivack | Animation |
| Yiqun Chen | Visual Effects |
| Mark Theriault | Visual Effects |
| Dhruva Pathak | VFX Artist |
| Mona Shokrai | Legal Services |
| Judah Mambu | Production Coordinator |
| Steve Mair | Musician |
| Ariandy Chandra | Title Designer |
| Igor Lodeiro | CG Supervisor |
| Oth Khotsimeuang | Lighting Artist |
| Jennifer Leigh King | Lighting Artist |
| Cindy Azada Whitman | Production Supervisor |
| Mike Safianoff | Animation |
| Dane Stogner | Animation |
| Rahul Nair | VFX Artist |
| Shanmuga Raja | VFX Artist |
| Andrew Wheeler | VFX Artist |
| Monica Dejbakhsh | Legal Services |
| James Beshears | Executive In Charge Of Post Production |
| Nathan Wall | Animation |
| Tom Pigott-Smith | Musician |
| Walt Fowler | Orchestrator |
| Beth Hofer | Executive In Charge Of Production |
| Afonso Salcedo | Lighting Artist |
| Nandhini Giri | Production Coordinator |
| Lauren Blackshear | Production Coordinator |
| Dawn Yamada | Production Supervisor |
| Chris Bancroft | Animation |
| Alexander Fleisig | Animation |
| Aljo Thomas | Animation |
| Tracey Dispensa | Production Supervisor |
| Erin Lehmkühl | Compositors |
| Margaret A. Decker | Software Engineer |
| Hannah Sherman | Lighting Artist |
| Sahaya Ramesh Bosco | Lighting Artist |
| Laura C. Denton | Production Coordinator |
| Caroline Robinson | Production Coordinator |
| Sumit Verma | Production Coordinator |
| Jannette Eng | Production Supervisor |
| Ryan Gong | Animation |
| James Wood Wilson | Visual Development |
| Lindsey Olivares | Visual Development |
| Dave Strick | Visual Effects |
| N. Joseph Burnette | VFX Artist |
| Ramakrishna Yerramsetty | VFX Artist |
| Taryn Feingold | Actor's Assistant |
| Kyle Goins | Legal Services |
| Anisha Gupta | Lighting Artist |
| Casey Sword | Production Coordinator |
| Onny P. Carr | Lighting Artist |
| Betty Tom | Production Accountant |
| Tim Kwan | Production Coordinator |
| Kyle Milardo | Production Coordinator |
| Mac Smith | Sound Effects Editor |
| Maciek Gliwa | Animation |
| Nishant Khanna | Visual Effects |
| Holly Edwards | Associate Producer |
| Tripp Hudson | Executive In Charge Of Production |
| Aleksey Igudesman | Musician |
| Gary Kettel | Musician |
| Mark Berrow | Musician |
| Ronman Yiu Yan Ng | CG Supervisor |
| Nishok Alagesan | Compositors |
| Peter Ettinger | First Assistant Editor |
| Shane Glading | Lighting Artist |
| Dinesh Krishnan Nair | Production Manager |
| Rick Giovinazzo | Orchestrator |
| Jeremy Bowker | Sound Effects Editor |
| Sujit Chatterjee | Animation |
| Mariko Hoshi | Animation |
| Scott Lafleur | Animation |
| Roy Margalit | Animation |
| Fangwei Lee | Visual Effects |
| Shiben Bhattacharjee | VFX Artist |
| Kendal Cronkhite | Production Design |
| Jonathan Evans-Jones | Musician |
| David Yanover | Post Production Supervisor |
| Cate Celso | Production Coordinator |
| Eric Michael Miller | Production Coordinator |
| Stephanie Quan | Production Coordinator |
| Milind D. Shinde | Production Manager |
| Teju Aloysius | Animation |
| Armando Sepulveda | Modeling |
| Phil Zucco | Modeling |
| Sam Michlap | Visual Development |
| Madhavaro Bheesetti | Visual Effects |
| Greg Beckman | VFX Artist |
| Vikas Chandel | VFX Artist |
| Carl Kaphan | VFX Artist |
| Ben Sutherland | VFX Artist |
| Tiffany Hillkurtz | Second Film Editor |
| George Meppadath Kurian | Animation |
| Christine Nguyen | Production Supervisor |
| Camille Leganza | Production Supervisor |
| Milton E. Rodriguez-Rios | CG Supervisor |
| Linhan Li | Lighting Artist |
| Nitin Punchail | Lighting Artist |
| Ajay Upadhyay | Lighting Artist |
| Sharanya Viswamani | Lighting Artist |
| Cathy Sitzes | Production Coordinator |
| Meredith Narrowe | Production Supervisor |
| Ronni Brown | Foley |
| Ardie Johnson | Modeling |
| Erwin Madrid | Visual Development |
| Kenard Pak | Visual Development |
| Nikhil Sinha | VFX Artist |
| Katie Van Maanen | VFX Artist |
| Mark Burton | Characters |
| Tom McGrath | Characters |
| Rani Naamani | Lead Animator |
| Cassidy Curtis | Animation Supervisor |
| Mark Donald | Animation Supervisor |
| Bryce McGovern | Animation Supervisor |
| Carlos Fernandez Puertolas | Animation Supervisor |
| Jason Ryan | Animation Supervisor |
| Jason Spencer-Galsworthy | Animation Supervisor |
| David Torres | Animation Supervisor |
| Cassidy Curtis | Lead Animator |
| Guillermo Careaga | Lead Animator |
| Mark Roennigke | Lead Animator |
| Melanie Cordan | Lead Animator |
| Carlos Fernandez Puertolas | Lead Animator |
| Cameron Fielding | Lead Animator |
| Mark Donald | Lead Animator |
| Bryce McGovern | Lead Animator |
| Jason Spencer-Galsworthy | Lead Animator |
| Kevin Andrus | Lead Animator |
| Nideep Varghese | Supervising Animator |
| Riyad C.M. | Supervising Animator |
| Philip Cohen | Production Supervisor |
| Matt Salkin | Production Assistant |
| Josh Wood | Post Production Assistant |
