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
Planet Nine, a hypothetical planet 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), New York politician whose surname is usually rendered "Nine"
Nine (rapper) (born 1969), American rapper
Tech N9ne (born 1971), American rapper
Nine (singer) (born 1999), Thai singer based in China
J. J. McCarthy (born 2003), American Football quarterback for the Minnesota Vikings
Fictional characters
The Nine, epithet for the Nazgûl in J. R. R. Tolkien's Middle-earth legendarium
⑨, a nickname for Cirno, an ice fairy from the video game series Touhou Project
Tails Nine, the New Yoke City counterpart of Tails from Sonic Prime
Literature
The Nine (book), a 2007 book by Jeffrey Toobin
NiNe. magazine, a magazine for teenage girls
Nine (manga), a 1978 baseball manga series by Mitsuru Adachi
"9" inset comics magazine in Eleftherotypia, a Greek newspaper
Films
9 (2002 film), a feature film by Ümit Ünal
9 (2005 film), a short film by Shane Acker
9 (2009 animated film), a feature film based on the short film by Shane Acker
9 (2016 film), a Canadian collaborative film by nine directors
9 (2019 film), a Malayalam feature film starring Prithviraj Sukumaran
9 (2021 film), a Uruguayan-Argentine sports drama film
Nine (2009 live-action film), a film based on the musical of the same name
Nines (film), a 2003 film
The Nines, a 2007 film starring Ryan Reynolds
Television
TV shows
The Nine (TV series), a serial drama television show that aired on ABC
Nine (TV series), a 2013 South Korean TV series
The 9, a local TV news programme, also known as The 6 (news programme)
The Nine (BBC Scotland), a nightly news programme in Scotland, airing at 9pm
9 (TV series), a 2018 Burmese television series
KBS News 9, a South Korean flagship news program broadcast on KBS 1
TV networks, stations, channels
Nine Media Corporation, Philippine media company
9TV, its defunct free-to-air channel
Nine Network, a TV network in Australia
WGN-TV (WGN 9), a channel in Chicago
WWOR-TV (My 9), a channel in New York City
TV9 (Malaysian TV network), a Malaysian free-to-air TV network
Other visual media
Nine (musical), a 1982 Broadway musical, also with a film version
Brands and enterprises
The9, a NASDAQ-listed Chinese game publisher specializing in MMORPGs
Nine Entertainment, an Australian media company and brand
Music
Ninth (interval), in music theory, the ninth note of a musical scale or the interval between the first and ninth notes
Albums
9 (Cashmere Cat album), 2017
9 (Damien Rice album), 2006