The 1934–35 League of Ireland was the fourteenth season of the League of Ireland. Bohemians were the defending champions.
Dolphin won their first title.
|Champions||Dolphin (1st title)|
|Goals scored||380 (4.22 per match)|
|Top goalscorer||Alf Rigby (17 goals)|
Cork Bohemians and Shelbourne were not re-elected to the League, while Waterford and Sligo Rovers were elected in their place. Waterford were re-elected after a two-year absence, while Sligo Rovers became the first team from Connacht to compete in the League.
|Bohemians||Dublin (Phibsborough)||Dalymount Park|
|Bray Unknowns||Bray||Woodbrook Ground|
|Dolphin||Dublin (Dolphin's Barn)||Dolphin Park|
|Drumcondra||Dublin (Clonturk)||Clonturk Park|
|St. James's Gate||Dublin (Crumlin)||St. James's Park|
|Shamrock Rovers||Dublin (Milltown)||Glenmalure Park|
|Sligo Rovers||Sligo||The Showgrounds|
|2||St James's Gate||18||12||3||3||46||33||+13||27|
|1||Alf Rigby||St James's Gate||17|
|2||Charles McDaid||Sligo Rovers||16|