- being one more than twelve
- the cardinal number that is the sum of twelve and one
- 13 is the natural number after 12 and before 14. It is the smallest number with eight letters in its name spelled out in English. It is also the first of the teens – the numbers 13 through 19 – the ages of teenagers.
- Thirteen is the fourth album by British alternative rock band Teenage Fanclub, released in 1993. It was named after the song "Thirteen" by Big Star, a band that has heavily influenced Teenage Fanclub.
- Thirteen is the first solo album from C.J from The Wildhearts
- This is a list of minor 2000 AD stories
- 13 is the year 13 A.D.
- Thirteen was a 1986 Emmylou Harris album. The title came from its status as her thirteenth studio album (if one doesn't count her 1970 independent label debut, which Harris herself rarely acknowledges). ...
- Tien len (Vietnamese: tiến lên, "tiến": advance; "lên": to go up, up; literally: "advance forward"), also known as Vietnamese cards, Thirteen, Killer, or Up the Hill in the United States, is a Vietnamese shedding-type card game devised in Southern China and Vietnam . ...
- Remy "Thirteen" Hadley, M.D., is a fictional character on the Fox medical drama House, portrayed by Olivia Wilde. She is part of the new diagnostic team assembled by Dr. Gregory House after the disbanding of his previous team in the third season finale. ...
- Black Man is a 2007 science fiction novel by Richard Morgan. It won the 2008 Arthur C Clarke Award. It was published as Thirteen in North America. It is not part of the Takeshi Kovacs universe by the same author.
- Thirteen: 13 Tales of Horror is an anthology of short stories. It is a book in the Point Horror series for teens and the first of three Thirteen anthologies. It was followed by Thirteen More Tales. All of the stories in this book were edited by Tonya Pines. ...
- Thirteen (officially stylised as TH13TEEN) is a steel roller coaster at Alton Towers in England. The ride is made by Intamin AG and opened on 20 March 2010.
- "Thirteen" is a song by the American rock band Big Star. Rolling Stone describes it "one of rock's most beautiful celebrations of adolescence", and rated it #396 in a list of the 500 greatest songs of all time. It was written by Alex Chilton and Chris Bell.
- WNET, channel 13 (also referred to as Thirteen), is a non-commercial television station licensed to Newark, New Jersey. With its signal covering the three-state New York metropolitan area, WNET is a flagship station of the Public Broadcasting Service and a primary provider of PBS programming. ...
- (Thirteens) Baroness is a solitaire card game that is played with a deck of 52 playing cards. Also known as Five Piles and Thirteens, it is a game that has an arrangement that is almost like that of Aces Up but with the game play of Pyramid.
- (Thirteens (album)) Thirteens is an album by Leona Naess, released in the U.S. on 16 September 2008 by Verve Forecast Records, and released in the UK on 11 May 2009 by Polydor Records.
- Trece, Oxlajuj (Osh’ lah hoo) Completion, Ascension
- The sacred number in Wicca. It relates to the number of Witches in a Traditional Coven or the aproximate number of Full Moons in a year. In reality, it is a prime number which is still usable, neither being too large or too small.
- num tor-v-on tor-v-on