1955–56 League of Ireland
| Season | 1955–56 | 
|---|---|
| Champions | St Patrick's Athletic (3rd title) | 
| Matches played | 132 | 
| Goals scored | 520 (3.94 per match) | 
| Top goalscorer | Shay Gibbons (21 goals) | 
| Biggest home win | Shelbourne 7–1 Limerick Waterford 7–1 Limerick Shamrock Rovers 6–0 Transport  | 
| Biggest away win | Transport 1–6 Waterford | 
| Highest scoring | Waterford 8–3 Transport | 
← 1954–55  1956–57 →   | |
The 1955–56 League of Ireland was the 35th season of senior football in the Republic of Ireland.
St Patrick's Athletic were the defending champions.