The 2024 Istanbul Challenger known as the QNB Finansbank Istanbul Challenger 76th TED Open International Tennis Tournament was a professional tennis tournament played on hard courts. It was the 38th edition of the tournament which was part of the 2024 ATP Challenger Tour. It took place in Istanbul, Türkiye between 2 and 8 September 2024.^[1]

Country	Player	Rank1	Seed
BIH	Damir Džumhur	82	1
KAZ	Mikhail Kukushkin	117	2
NED	Jesper de Jong	128	3
CRO	Duje Ajduković	134	4
SRB	Hamad Medjedovic	137	5
DEN	August Holmgren	163	6
USA	Martin Damm	205	7
KAZ	Denis Yevseyev	207	8

• ¹ Rankings are as of 26 August 2024.^[2]

The following players received wildcards into the singles main draw:

• Tuncay Duran
• Yankı Erel
• Koray Kırcı

The following players received entry into the singles main draw as alternates:

• Gabi Adrian Boitan
• Dino Prižmić

The following players received entry from the qualifying draw:

• Egor Agafonov
• Cem İlkel
• Benjamin Lock
• Saba Purtseladze
• Ilia Simakin
• Maxim Zhukov

• Damir Džumhur def. Hamad Medjedovic 6–4, 6–2.

• Aleksandre Bakshi / Yankı Erel def. August Holmgren / Johannes Ingildsen 7–6^(7–4), 7–5.