The following are the association football events of the year 1999 throughout the world.

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• Manchester United won the UEFA Champions League, FA Cup and Premiership to cap off an unprecedented European Treble.
• 1999 Copa Libertadores: Won by Palmeiras after defeating Deportivo Cali 4–3 on a penalty shootout after a final aggregate score of 2–2.
• FIFA Women's World Cup – United States won 0–0, 5–4 on penalty kicks, over China
• Confederations Cup – Mexico won the tournament after beating Brazil 4–3
• March 14 – New J.League Division 2 (J2) season started with ten clubs, one relegated from previous season's J.League and nine promoted from former Japan Football League.
• May 22 – Manchester United wins the FA Cup with a 2–0 win over Newcastle United. The goals are scored by Teddy Sheringham and Paul Scholes.
• August 8 – Feyenoord wins the Johan Cruyff Shield, the annual opening of the new season in the Eredivisie, by a 3–2 win over Ajax at the Amsterdam Arena.
• September 11 – Manager Hans Meyer from Germany resigns at Dutch club Twente, and is replaced by former player Fred Rutten.
• October 27 – Dutch club Sparta Rotterdam fires manager Jan Everse, who is replaced by Dolf Roks.
• October 30 – Manager Herbert Neumann is fired at Dutch club Vitesse. Ronald Koeman will replace him on 1 January 2000. In the meantime former player Edward Sturing takes control.
• November 5 – Italy's Veneto wins the first UEFA Regions' Cup, beating Spain's Madrid 3–2, after extra time, in Abano Terme.
• November 30 – Manchester United wins the Intercontinental Cup in Tokyo by defeating Brazil's Palmeiras: 1–0. The only goal for the English club is scored by Roy Keane in the 35th minute.
• December 29 – Manager Jimmy Calderwood leaves Dutch club NEC and is succeeded by former player Ron de Groot.

• UNCAF Nations Cup in San José, Costa Rica (March 17–28, 1999)
  1.  Costa Rica
  2.  Guatemala
  3.  Honduras
• Canada Cup in Edmonton, Alberta, Canada (June 2–6, 1999)
  1.  Ecuador
  2.  Iran
  3.  Canada
• Copa América in Paraguay (June 29 – July 18, 1999)
  1.  Brazil
  2.  Uruguay
  3.  Mexico
• Pan American Games in Winnipeg, Manitoba, Canada (July 23 – August 7, 1999)
  • Men's Tournament
  1.  Mexico
  2.  Honduras
  3.  United States
  • Women's Tournament
  1.  United States
  2.  Mexico
  3.  Costa Rica
• FIFA U-20 World Cup in Nigeria (April 3–24, 1999)
  1.  Spain
  2.  Japan
  3.  Mali
• FIFA U-17 World Championship in New Zealand (November 10–27, 1999)
  1.  Brazil
  2.  Australia
  3.  Ghana

• Soccer Dog: The Movie (US)
• There's Only One Jimmy Grimble (UK)

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• 1 January: Gianluca Scamacca, Italian footballer
• 5 January: Mattias Svanberg, Swedish footballer
• 9 January: Maximiliano Romero, Argentinian footballer
• 12 January: Tyler Roberts, Welsh footballer
• 16 January: Joe White, English footballer
• 19 January:
  • Donyell Malen, Dutch footballer
  • Valentino Müller, Austrian footballer
• 23 January:
  • Alban Lafont, French footballer^[1]
  • Malang Sarr, French footballer
• 24 January: Shan Huanhuan, Chinese footballer
• 30 January: Junior Etoundi, French professional footballer^[2]
• 4 February: Mohammad Soltani Mehr, Iranian footballer
• 17 February: Oscar Krusnell, Swedish footballer^[3]
• 20 February: Witthawat Sailam, Thai professional footballer^[4]
• 25 February: Gianluigi Donnarumma, Italian international goalkeeper
• 12 March: Vladislav Rubin, Belarusian professional footballer^[5]
• 18 March: Diogo Dalot, Portuguese international footballer
• 29 March: Ezequiel Barco, Argentinian footballer
• 31 March: Jens Odgaard, Danish footballer
• 14 April: Matteo Guendouzi, French footballer
• 20 April: Johao Martínez, Venezuelan footballer^[6]
• 24 April: Jonathan Leko, English footballer
• 1 May: Edriss Hushmand, Swedish footballer^[7]
• 7 May: Cody Gakpo, Dutch footballer
• 25 May: Ibrahima Konaté, French footballer
• 3 June: Dan-Axel Zagadou, French footballer
• 10 June: Rafael Leão, Portuguese footballer
• 11 June: Kai Havertz, German international
• 15 June: Luis Simigliani, Venezuelan footballer^[8]
• 23 June:
  • Linton Maina, German footballer
  • Esteban Um Lee, SouthKorean–Bolivian footballer^[9]
• 24 June: Darwin Núñez, Uruguayan international
• 29 June: Miguel Machado, Portuguese footballer^[10]
• 2 July: Nicolò Zaniolo, Italian international
• 3 July: Corentin Chaminade, French professional footballer^[11]
• 4 July: Jessy Caicedo, Ecuadorian footballer^[12]
• 14 July: Emanuele Colarieti, Italian footballer^[13]
• 17 July: Stahl Gubag, Papua New Guinean international
• 3 August: Brahim Díaz, Spanish footballer
• 12 August: Matthijs de Ligt, Dutch international
• 14 August: José Torín, Venezuelan footballer^[14]
• 20 September: Noah Schmitt, German footballer^[15]
• 5 October: Connor McLennan, Scottish youth international
• 15 October: Ben Woodburn, Welsh international
• 10 November: João Félix, Portuguese international
• 18 November: Domingos Quina, Portuguese footballer
• 4 December: Tahith Chong, Dutch footballer
• 10 December: Reiss Nelson, English footballer