OTP Group has acquired Splitska Bank from Société Générale for an undisclosed fee.
The bank is the fifth largest in Croatia and the deal will see OTP increase its market share to 10%.
OTP, Hungary's largest bank, entered the Croatian market in 2005.
The deal has an enterprise value of €480 million.
Société Générale is currently reviewing its strategy in the CEE with the intention to focus more on those markets where it can compete with the biggest lenders.
The deal comes at a time when a number of potential deals could change the Croatian banking landscape including the sale by UniCredit of Zagrebačka Banka.