9 is a number, numeral, and glyph. 9 or nine may also refer to:

Dates

* AD 9, the ninth year of the AD era * 9 BC, the ninth year before the AD era * 9, numerical symbol for the month of September

Places

* Nine, Portugal, a parish in the town of Vila Nova de Famalicão * Planet Nine, a planet proposed to exist in the outer Solar System * Zheleznogorsk, Krasnoyarsk Krai, Russia, a closed town * The 9, a residential portion of Ameritrust Tower in Cleveland

People

* Louis Niñé (1922–1983), a New York politician whose surname is usually rendered "Nine" * Nine (rapper) (born 1969), a hip hop musician * Tech N9ne (born 1971), an American rapper

Fictional characters

* The Nine, epithet for the Nazgûl in J. R. R. Tolkien's Middle-earth legendarium * ⑨, a derogatory name for Cirno, an ice fairy from the dōjin game ''Touhou Project''

Literature

* ''The Nine (book)'', a 2007 book by Jeffrey Toobin * ''NiNe. magazine'', a magazine for teenage girls * Nine (manga), ''Nine'' (manga), a 1978 baseball manga series by Mitsuru Adachi * "9" Eleftherotypia#The "9" comics magazine, inset comics magazine in ''Eleftherotypia'', a Greek newspaper

Films

* 9 (2002 film), ''9'' (2002 film), a feature film by Ümit Ünal * 9 (2005 film), ''9'' (2005 film), a short film by Shane Acker * 9 (2009 animated film), ''9'' (2009 animated film), a feature film based on the short film by Shane Acker * 9 (2016 film), ''9'' (2016 film), a Canadian collaborative film by nine directors * 9 (2019 film), ''9'' (2019 film), a Malayalam feature film starring Prithviraj Sukumaran * 9 (2021 film), a Uruguayan-Argentine sports drama film * Nine (2009 live-action film), ''Nine'' (2009 live-action film), a film based on the musical of the same name * Nines (film), ''Nines'' (film), a 2003 film * ''The Nines'', a 2007 film starring Ryan Reynolds

Television

TV shows

* The Nine (TV series), ''The Nine'' (TV series), a serial drama television show that aired on ABC * Nine (TV series), ''Nine'' (TV series), a 2013 South Korean TV series * ''The 9'', a local TV news programme, also known as ''The 6 (news programme)'' * ''KBS News 9'', a South Korean flagship news program broadcast on KBS 1 * The Nine (BBC Scotland), ''The Nine'' (BBC Scotland), a nightly news programme in Scotland, airing at 9pm * 9 (TV series), a 2018 Burmese television series

TV networks, stations, channels

* My 9, branding for New York City television channel WWOR-TV * WGN 9, branding for Chicago television channel WGN-TV * Nine Network, a TV network in Australia

Other visual media

* Nine (musical), ''Nine'' (musical), a 1982 Broadway musical, also with a film version * ''9: The Last Resort'', a 1996 computer game * The9, a NASDAQ-listed Chinese game publisher specializing in MMORPGs * ''The 9 on Yahoo!'', a daily video compilation of "web finds" * ''Mighty No. 9'', a platforming video game

Music

* Ninth, in music theory, the ninth note of a musical scale or the interval between the first and ninth notes

Albums

* 9 (Cashmere Cat album), ''9'' (Cashmere Cat album), 2017 * 9 (Damien Rice album), ''9'' (Damien Rice album), 2006 * 9 (Eros Ramazzotti album), ''9'' (Eros Ramazzotti album), 2003 * 9 (Lara Fabian album), ''9'' (Lara Fabian album), 2005 * 9 (Mercyful Fate album), ''9'' (Mercyful Fate album), 1999 * 9 (Public Image Ltd. album), ''9'' (Public Image Ltd. album), 1989 * 9 (Do As Infinity album), ''9'' (Do As Infinity album), 2001 * 9 (Alice Nine album), ''9'' (Alice Nine album), 2012 * 9 (Lil' Kim album), ''9'' (Lil' Kim album), 2019 * 9 (Polina Gagarina album), ''9'' (Polina Gagarina album), 2016 * 9 (Pond album), ''9'' (Pond album), 2021 * 9 (Jason Aldean album), ''9'' (Jason Aldean album), 2019 * Nine (Fairport Convention album), ''Nine'' (Fairport Convention album), 1973 * Nine (Shankar Mahadevan album), ''Nine'' (Shankar Mahadevan album), 2003 * Nine (Circus Maximus album), ''Nine'' (Circus Maximus album), 2012 * Nine (Tim Hardin album), ''Nine'' (Tim Hardin album), 1973 * Nine (Samantha Jade album), ''Nine'' (Samantha Jade album), 2015 * Nine (Blink-182 album), ''Nine'' (Blink-182 album), 2019 * Nine (Sault album), ''Nine'' (Sault album), 2021

Songs

* "9", track 2 of Drake on the album ''Views (album), Views'', released in 2016 * "Nine", the first single of Leeds-based band ¡Forward, Russia!, released in April 2005 * "Nine", a song on the Grand Magus album ''Wolf's Return'' * "Nine", a song on the Neurosis album ''Given to the Rising'' * "The Nine", a 1998 song by drum and bass group Bad Company (drum and bass group), Bad Company

Bands

* 9nine or 9 nine (pronounced "nine"), a Japanese girl group * Nine (band), a Swedish hardcore band * The9 (group), a Chinese girl group * Slipknot (band), an American heavy metal band sometimes called ''The Nine'', referring to its number of members

Sports

* ''Niners'', a reference to The San Francisco 49ers * Number 9, the shirt number often worn by an association football team's centre forward * False 9 or False Number 9, a term used to describe an unconventional association football lone striker or centre-forward, who drops deep into midfield

Transportation

* 9 (New York City Subway service), a designation given to several IRT services of the New York City Subway * 9 (Los Angeles Railway), a line operated by the Los Angeles Railway from 1932 to 1956 * Renault 9, Renault ''9'', a family car * DS 9, DS ''9'', an executive car

Other uses

* 9 mm caliber, a firearms cartridge & bullet size ** 9×19mm Parabellum, a popular handgun cartridge * Nine Entertainment, an Australian media company and brand * Nines (notation), a term used to indicate purity of metals or chemicals, or the availability of a system * 9, X-SAMPA symbol for an open-mid front rounded vowel