Taylor Schilling ... Piper Chapman
Danielle Brooks ... Tasha 'Taystee' Jefferson
Dascha Polanco ... Dayanara Diaz
Joel Marsh Garland ... Scott O'Neill
Kate Mulgrew ... Galina 'Red' Reznikov
Lea Delaria ... Big Boo
Michael Harney ... Sam Healy
Natasha Lyonne ... Nicky Nichols
Samira Wiley ... Poussey Washington
Selenis Leyva ... Gloria Mendoza
Uzo Aduba ... Suzanne 'Crazy Eyes' Warren