First League may refer to:
Association football
Current Leagues
Armenian First League, the Armenian second tier men's division Austrian Football First League, the Austrian second tier men's division Belarusian First League, the Belarusian second tier men's division First League of Belgrade, a section of Serbia's fifth football league First League of the Federation of Bosnia and Herzegovina, a second-level league First Football League of Kosovo, a second-level league First League of Primorje-Gorski Kotar County, the fifth level league in the Croatian football league system First League of the Republika Srpska, a second-level football competition in Bosnia and Herzegovina Bulgarian First League, the Bulgarian top-flight men's division Czech First League, the Czech top-flight men's division First Macedonian Football League, the Macedonian top-flight men's division Montenegrin First League, the Montenegrin top-flight men's division Russian First League, the Russian second tier men's division TFF First League, the Turkish second tier men's division Serbian First League, the Serbian second tier men's division Ukrainian First League, the Ukrainian second tier men's division Uzbekistan First League, the Uzbekistan second tier men's division
Defunct leagues
Czechoslovak First League, the former Czechoslovak top-flight men's division (1925–1993) Soviet First League, the former Soviet second-flight men's football division (1936–1991) First League of Herzeg-Bosnia, the top football league in Croatian Republic of Herzeg-Bosnia (1993–2001) First League of Serbia and Montenegro, the former Yugoslav/Serbo-Montenegrin top-flight men's division (1992–2006) Yugoslav First League, the former Yugoslav top-flight men's division (1923–1992)
Other First League of Armed Neutrality, an alliance of European naval powers, 1780–1783