O'Kane is an Irish surname, anglicised from the Irish Ó Catháin, and was the name of a significant clann in Ulster, a province of Ireland. The surname has also been anglicised as O'Cahan, Kane, O'Keane, O'Kean, O'Keen, O'Keene, Keen, Keene, Kain, O'Kaine, and similar variations thereof. They are descended from Eógan, son of Niall of the Nine Hostages. In the late Middle Ages, they were the primary sept under the Ó Néill clann of Ulster, holding the privilege of inaugurating the Chief of the Ó Néill.
USS O'Kane (DDG-77) is an Arleigh Burke-class destroyer in the United States Navy. The ship was built by Bath Iron Works in Bath, Maine, starting on 8 May 1997. The ship was commissioned on 23 October 1999. It is named for Medal of Honor recipient Rear Admiral Richard O'Kane.
USS O'Kane was built in Bath, Maine at Bath Iron Works. USS O'Kane was launched in March 1998. USS O'Kane was commissioned on 23 October 1999 under the command of CDR David Hulse in Pearl Harbor, Hawaii. USS O'Kane participated in RIMPAC 2000. USS O'Kane participated in Fleet Week San Diego in October 2000. In November 2000 CDR Taylor Skardon assumed command. USS O'Kane deployed on her maiden deployment on 1 August 2001. While on deployment USS O'Kane conducted Maritime Interdiction Operations in the Northern Persian Gulf during the opening stages of Operation Enduring Freedom. USS O'Kane returned home to Pearl Harbor in late January 2002. USS O'Kane received the Battle "E" award for Destroyer Squadron 31 for 2001. USS O'Kane also received the Navy Unit Commendation, her first Armed Forces Expeditionary Award, her first Sea Service Award, and National Defense Service Awards while on her Maiden Deployment.