PEOPLE (by last name / then D.o.B.)

• Thomas Johannes Obenhuber (born 1955)

• Dr. John F. "Jack" Obijeski (born 1941)

• Dr. Paul Allan Offit (born 1951)

• Dr. Lloyd John Old (born 1933)

• Kevin James Olival (born 1975)

• Lionel Herbert Olmer (born 1934)

• Kenneth Harry Olsen (born 1926)

• Dr. Frank Rudolph Emmanuel Olson (born 1910)

• Theodore Bevry Olson (born 1940)

• Barbara Kay (Bracher) Olson (born 1955)

• Hitoshi Oshitani (born 1959)

• Dr. Michael Thomas Osterholm (born 1953)

• Dr. Tara Jeanne O'Toole (born 1951)