Sir Patrick O'Brien, 2nd Baronet

Sir Patrick O'Brien, 2nd Baronet (* 1823, † April 23, 1895 in Brighton ) was an Irish politician.

O'Brien was established in 1852 for the electoral district of King's County elected to the House of Commons and belonged to him as a Liberal until 1885.

Patrick O'Brien was the eldest son of Timothy O'Brien. After the death of his father in 1862 he inherited the title. After his death the baronetcy then passed to Patrick O'Brien's nephew Timothy Carew O'Brien. O'Brien was buried at Kensal Green Cemetery.