USS O'Brien
Five ships of the United States Navy were named USS O'Brien :
- USS O'Brien (TB-30) , a torpedo boat, in service from 1900 to 1909
- USS O'Brien (DD-51) , an O'Brien-class destroyer , in service from 1915 to 1922
- USS O'Brien (DD-415) , a Sims-class destroyer , in service from 1940 to 1942 when it was hit by an enemy torpedo
- USS O'Brien (DD-725) , an Allen M. Sumner class destroyer , in service from 1944 to 1972
- USS O'Brien (DD-975) , a Spruance-class destroyer , in service from 1981 to 2004