Step 1: What is asked.
We need the bank that won the IBA Banking Technology Award 2026 for Best Fintech and DPI Adoption.
Step 2: About the award.
The Indian Banks' Association gives this award to banks that lead in digital banking and public infrastructure use.
Step 3: The criteria.
It rewards banks that use Digital Public Infrastructure well, such as UPI and Account Aggregator services.
Step 4: The winner.
Karnataka Bank won the 2026 award for its strong fintech and DPI adoption.
Step 5: Remove others.
Canara Bank, Punjab National Bank, and ICICI Bank were not the winner in this category.
Step 6: Conclusion.
So the winner is Karnataka Bank.
Answer: Karnataka Bank