Regional clubs from entering in 2026:
- Port Pirie
- Northern Demons - 2026 SA State League 2 North
- Limestone Coast
- International Mt Gambier - 2026 Limestone Coast Barry Manley Premier League
- Gambier Centrals - 2026 Limestone Coast Barry Manley Premier League
- Naracoorte United - 2026 Limestone Coast Barry Manley Premier League
- Blue Lake Rangers - 2026 Limestone Coast Barry Manley Premier League
- Whyalla
- Whyalla Lions - 2026 Whyalla Jim Lawrenson League
- Could perhaps also include Barossa United, but I don't know what part of "Regional SA" they fit under
Clubs competing for first time (or first time since 2023) in SA:
- Barossa United - 2026 SA State League 2 North
- Plympton Bulldogs - 2026 SA State League 2 South
- Sturt Marion Thunder - 2025 SA Amateur League Saturday Division 2
- Blue Lake Rangers - 2026 Limestone Coast Barry Manley Premier League
- West Adelaide Raptors - No League Noted (I believe I had left this club out of the database due to appearing as a West Adelaide Hellas satellite club, so more research on it's history is needed on my part).
- Whyalla Lions - 2026 Whyalla Jim Lawrenson League
Clubs returning in 2026, after skipping 2025 in SA:
- Ingle Farm - 2025 SA Amateur League Sunday Premier Division
- Messinian Association Hawks - 2025 SA Amateur League Saturday Division 2
Clubs that competed in 2025, that have not returned for 2026 (listed with their 2025 league):
- Pitbulls - SA Amateur League Saturday Premier Division
- Portland Panthers - Limestone Coast Barry Manley Premier League
- Adelaide Eagles - SA Amateur League Sunday Premier Division
- Para Hills United - SA Amateur League Sunday Premier Division
- Old Ignatians - SA Amateur League Saturday Premier Division
- Croydon Cougars - SA Amateur League Saturday Premier Division
- Apollo - Limestone Coast Barry Manley Premier League