Multi-pollutant protocol designed to reduce acidification, eutrophication and ground-level ozone

EuroBasket 1999 — 1999 edition of the Eurobasket

1999 Copa América — 1999 edition of the Copa América association football competition

1999 World Men's Handball Championship — 1999 edition of the World Men's Handball Championship

Eurovision Song Contest 1999 — 44th edition of the Eurovision Song Contest

1999 Formula One World Championship — sports season

1999 FIFA Women's World Cup — 1999 edition of the FIFA Women's World Cup

1999 conflict between India and Pakistan

1999–2000 UEFA Cup — 29th season of Europe's secondary club football tournament organised by UEFA

1999 FIFA Confederations Cup — 4th FIFA Confederations Cup, held in Mexico

Chavism — left-wing political ideology