Big O

Big O or The Big O may refer to:

Mathematics and computing

 * Big Omega function (disambiguation), various arithmetic functions in number theory
 * Big O notation, asymptotic behavior in mathematics and computing
 * Time complexity in computer science, whose functions are commonly expressed in big O notation

People

 * Omar Gooding (born 1976), American actor, rapper, voice artist and comedian
 * Oliver Miller (born 1970), former professional basketball player
 * Takashi Nagasaki (born 1958), Japanese author
 * Barack Obama (born 1961), 44th President of the United States
 * Roy Orbison (1936–1988), American singer-songwriter
 * Glenn Ordway (born 1951), Boston-area sports radio host
 * Otis Redding (1941–1967), American soul singer-songwriter and record producer
 * Oscar Robertson (born 1938), former professional basketball player
 * Oscar Santana, American radio personality
 * Oprah Winfrey (born 1954), American television host, producer and philanthropist
 * Oscar McInerney (born 1994), Australian rules footballer

Structures and venues

 * Big O (Ferris wheel), the world's largest centerless Ferris wheel, in Japan
 * Big "O", a structure on Skinner Butte in Eugene, Oregon, United States, listed on the National Register of Historic Places
 * Olympic Stadium (Montreal), Quebec, Canada; the main venue of the 1976 Summer Olympics
 * Ontario Motor Speedway, California, USA; former superspeedway racecar track

Other uses

 * The Big O, a 1999 Japanese animated TV series
 * Omega (Ω), a Greek letter, whose name translates literally as "great O"
 * Big O Tires, a tire retailer in the United States and Canada
 * The Big O (album), by Roy Orbison
 * Big Orange Chorus, a barbershop men's chorus in Jacksonville, Florida