Daniel Joseph O'Hern (May 23, 1930 – April 1, 2009) was a former associate justice of the New Jersey Supreme Court, where he served from August 6, 1981, until his retirement upon his 70th birthday.

[1] O'Hern was born in Red Bank in 1930 and attended Regis High School on the Upper East Side of Manhattan.

[2] O'Hern served in the United States Navy from 1951 to 1954, during the Korean War, attaining the rank of Lieutenant, Junior Grade.

After leaving active duty, he graduated from Harvard Law School in 1957, and served as a clerk to United States Supreme Court Justice William J. Brennan, Jr.[1] He was an elected official in his hometown of Red Bank, serving on its borough council and as Mayor of Red Bank, New Jersey.

Byrne submitted his Supreme Court nomination to the New Jersey Senate, and he was confirmed on May 20, 1981, and sworn in on August 6, 1981.