Robert O'Brien may refer to:

Sportspeople

Robert O'Brien (cricketer) Robert O'Brien (16 July 1869 – 2 October 1922) was an Australian cricketer. He played in four first-class cricket, first-class matches for Queensland cricket team, Queensland between 1892 and 1897. See also * List of Queensland first-class ...

(1869–1922), Australian cricketer * Robert O'Brien (racing driver) (1908–1987), American racing driver * Bob O'Brien (basketball) (1927–2008), American basketball player *

Robert O'Brien (canoeist) Robert O'Brien (born June 6, 1933) is an American sprint canoer who competed in the late 1950s and early 1960s. Competing in two Summer Olympics, he earned his best finish of 11th in the K-1 10000 m event at Melbourne in 1956 Events J ...

(born 1933), American sprint canoer *

Bob O'Brien (baseball) Robert Allen O'Brien (born April 23, 1949) is an American former pitcher in Major League Baseball. He pitched in 14 games for the Los Angeles Dodgers during the 1971 season, including four starts and one shutout. Baseball career O'Brien was ...

(born 1949), baseball player

Others

Robert J. O'Brien Robert J. O'Brien (June 5, 1858 – May 9, 1948) was an American real estate developer, politician, and philanthropist. He served on the Cincinnati City Council and in the Ohio Senate. Biography Early life Robert J. O'Brien was born in New ...

(1858–1948), American real estate developer, politician and philanthropist *

Robert O'Brien (executive) Robert H. O'Brien (1907–1997) was an American businessman and Hollywood executive who was president of Metro-Goldwyn-Mayer during the 1960s. O'Brien was a financial officer at Paramount Pictures for ten years, including treasurer of United Para ...

(1907–1997), American businessman *

Robert C. O'Brien (author) Robert Leslie Carroll Conly (January 11, 1918 – March 5, 1973), better known by his pen name Robert C. O'Brien, was an American novelist and a journalist for ''National Geographic'' magazine. He is best known for his novels ''Mrs. Frisby and t ...

(1918–1973), American journalist and children's book author * Robert O'Brien (artist) (born 1939), British Hong Kong artist *

Robert O'Brien (RAF officer) Air Vice Marshal Robert P. O'Brien, is a former senior commander in the Royal Air Force who served as Air Secretary from 1994 until his retirement in 1998. RAF career O'Brien joined the Royal Air Force in 1963. He became Commandant of the Joint ...

(active in 1990s), former US Air Secretary *

Robert C. O'Brien Robert Charles O'Brien Jr. (born June 18, 1966) is an American attorney who was the twenty-seventh United States national security advisor from 2019 to 2021. He was the fourth and final person to hold the position during the first presidency of ...

(born 1966), US National Security Advisor {{hndis, Obrien, Robert