ISTANBUL, May 24 (Reuters) - The Turkish banking sector's loan growth may exceed 15 percent this year, Turkiye Is Bankasi ISCTR.IS chief executive Adnan Bali said on Wednesday, adding there may be a slowdown in Credit Guarantee Fund-backed (KGF) loans.

Speaking to reporters following a meeting in Istanbul, Bali said Isbank granted around 15 billion lira ($4.21 billion) worth of loans backed by the KGF, a Turkish government fund guaranteeing loans to smaller businesses. ($1 = 3.5642 liras)

(Reporting by Ebru Tuncay; Writing by Ezgi Erkoyun; Editing by Daren Butler) ((Ezgi.erkoyun@tr.com; Reuters Messaging: ezgi.erkoyun.thomsonreuters.com@reuters.net;))