O'Brien, John (Johnny) 1895-c1913  (Died 8-25-1969)*

O'Dell, James c1900-

O'Dell, Jerry Jr. 1943-1967  (Died 11-29-1967) 1990-2004  (Died  2-09-2005)

O'Guynn, Randall "Randy" Scott  (Born)  1990-2004  (Died  2-09-2005)

O'Leary, Thomas Zeno (Born 7-4) 1936-1978  (Died 7-26-1982)

O'Leary, Walter. c1900-  

O'Neal, Joseph Homer (Born 10-11-1903) 1924-1962  (Died 8-19-1988)  

O'Pry, Julius Edward 1951-1966  (Died 4-11-1966)

O'Rourke, Richard c1907- 

Oertli, William Leonard Jr. (Born 9-26-1933)  1959-1992  (Died 9-28-1992)

Ogilvie, Lester E. c1915-  

Ogg, Johnny William (Born 8-12-1937) 1959-1984  (Died 8-17-2003)

Ogletree, William Earl (Born 12-27-1917) 1947-1977  (Died 10-28-1987) 

Ohendalski, Raymond S. (Born 7-18-1923) 1950-1973  (Died 2-5-2001)

   Ollre, Cornelius J. "Roxy" Sr. (Born 4-15-1882) c1900-c1929 (Died 1-24-1933)
    Fire Chief 1923-1929  

Ollre, Albert George Jr. (Born 9-29-1911) 1940-1967  (Died 8-09-1979)

Ollre, Albert George Sr. (Born 3-24-1876) 1900-1909 (Died 7-29-1929)

Ollre, David Eugene 1959-1965  (Died 8-21-1965)

Ollre, Jacob Joseph  c1900- 

  Ollre, Reginald Felix "Kid"  (Born 9-21-1874) 1895-1943  (Buried 2-13-1939)* 
      Fire Chief 1908-1912             Houston Volunteer 1887-1895
Original HFD member

Olschewske, Charles  c1902-

Olivier, Alcide Pierre Jr. (Born 2-14-1925) 1958-1978  (Died 3-08-2005)

  Ondrosek, Johnnie Joseph 1944-1964  (Died 1-13-1991)

Ondrosek, Robert Lee (Born 1929) 1945-1971  (Died 11-18-1987)

Onusett, William Paul 1936-1947  (Died 12-31-1987)

Osborn, Herbert Arthur (Born 10-11-1948) 1973-1997  (Died 7-04-1998)

Otis, R. W.   c1915-

Oujesky, Ilu Valarian (Born 4-30-1917) 1951-1977  (Died 12-03-1998)