Celebrities born in 1973
51

Johan Östling

actor  
50

Gina Osterloh

 
51

Martin Österdahl

author  
51

Sara Mathilde Øster

artist  
50

Rune André Østby

skier  
50

Gelegjamtsyn Ösökhbayar

wrestler  
51

Dejan Osmanović

footballer  
51

Rick O'Shea

Broadcaster  
51

Óscar Ortiz (tennis)

player  
51

Nery Ortíz

footballer  
51

María de los Ángeles Ortiz

athlete  
51

Fernando Álvarez Ortiz de Urbina

sailor  
51

Sebastián Ortega

Television  
50

Chañaral Ortega-Miranda

composer  
50

Caleb Orozco

activist  
51

Charles-Philippe d'Orléans

 
51

Louise O'Reilly

politician  
50

Caitriona O'Reilly

 
50

Hana O'Regan

academic  
50

Eamon Ore-Giron

artist  
51

Hilda Ordoñez

manager  
51

Ebelio Ordóñez

footballer  
51

Ximena Órdenes

politician  
50

Valérie Oppelt

politician  
50

Angela Onwuachi-Willig

legal  
51

Fredrik Önnevall

journalist  
50

Rachel Ong

politician  
51

Susie O'Neill

swimmer  
51

Morgan O'Neill

Actor  
51

Julian O'Neill (New Zealand rugby league)

footballer