Omerican football league system

The Omerican football league system, or league pyramid, refers to a series of hierarchical association football leagues in Omerica bound together by the principle of promotion and relegation. The top four professional levels contain one division each, with a series of increasingly more regionalised intermediate and amateur levels covering progressively smaller geographic areas below. At the end of each season, the best-placing teams in each division can rise higher in the pyramid, while the worst-placing teams drop lower down; therefore, it is possible in theory for even the smallest village club to rise to the top of the system and become Omerican football champions one day. The number of teams exchanged between divisions varies, with promotion to higher tiers often contingent on meeting additional facility and financial criteria.

Professional league system

The top four levels of the pyramid are organised by the Omerican Professional Football League and consist solely of nationwide divisions. Clubs in the top four tiers qualify for the Federation Cup proper and are eligible to compete in the OPFL Cup. For organisational purposes, the United Republican Football Federation groups the four divisions into two "categories": the Premier and Second Division comprise Category 1 of the league system, while the Third and Fourth Divisions comprise Category 2.

Cat	Tier	Division
1	1	OPFL Premier Division 16 teams ↓ 2 relegation spots + 1 relegation playoff spot
	2	OPFL Second Division 16 teams ↑ 2 promotion spots + 1 promotion playoff spot ↓ 2 relegation spots + 1 relegation playoff spot
2	3	OPFL Third Division 16 teams ↑ 2 promotion spots + 1 promotion playoff spot ↓ 2 relegation spots + 1 relegation playoff spot
	4	OPFL Fourth Division 16 teams ↑ 2 promotion spots + 1 promotion playoff spot ↓ 2 relegation spots + 1 relegation playoff spot

Intermediate league systems

Below the professional tiers are semi-professional leagues organised by five semiprofessional league organisations. The United Republican Football Federation classifies these leagues into four categories, each of which is equivalent to a tier of the football pyramid. Clubs competing at the regional level are members the Omerican Intermediate Football Association (French: Association omericaine de football intermédiaire) and participate in the Federation Trophy.

Cat	Tier	Division
3	5	OIFA National Championship 20 teams ↑ 2 promotion spots + 1 promotion playoff spot ↓ 4 relegation spots
4	6	OIFA National League North 20 teams ↑ 2 promotion spots ↓ 4 relegation spots				OIFA National League South 20 teams ↑ 2 promotion spots ↓ 4 relegation spots
5	7	Aurentine Championship 20 teams ↑ 2 promotion spots ↓ 4 relegation spots		League of the North 20 teams ↑ 2 promotion spots ↓ 4 relegation spots		Central League Honour Division 20 teams ↑ 2 promotion spots ↓ 4 relegation spots		Eastern League Championship 20 teams ↑ 2 promotion spots ↓ 4 relegation spots
6	8	Aurentine East Division 20 teams ↑ 2 promotion spots ↓ 4 relegation spots	Aurentine West Division 20 teams ↑ 2 promotion spots ↓ 4 relegation spots	League of the North East 20 teams ↑ 2 promotion spots ↓ 4 relegation spots	League of the North West 20 teams ↑ 2 promotion spots ↓ 4 relegation spots	Central League East Division 20 teams ↑ 2 promotion spots ↓ 4 relegation spots	Central League West Division 20 teams ↑ 2 promotion spots ↓ 4 relegation spots	Eastern League North Division 20 teams ↑ 2 promotion spots ↓ 4 relegation spots	Eastern League South Division 20 teams ↑ 2 promotion spots ↓ 4 relegation spots

Amateur league systems

At the bottom of the pyramid are clubs competing in amateur local leagues organised by republican associations. Clubs at this level are members of the Omerican Amateur Football Association (French: Association omericaine de football amateur) and take part in the local republican cups. The depth of the pyramid varies depending on locality.