FSTTCS 2025 is the 45th conference on Foundations of Software Technology and Theoretical Computer Science. It is organised by IARCS, the Indian Association for Research in Computing Science, in association with ACM India. It is a forum for presenting original results in foundational aspects of Computer Science and Software Technology.

FSTTCS 2025 will be held in BITS Pilani, K K Birla Goa Campus during December 17–19, 2025. The conference is being organized as an in-person event.

• Abstract submission deadline: July 4, 2025 AoE
• Paper submission deadline: July 11, 2025 AoE
• Rebuttal: August 26–28, 2025
• Notification to authors: September 15, 2025
• Deadline for camera-ready papers: TBA
• Pre-conference workshop(s): December 15 – 16, 2025
• FSTTCS 2025: December 17 – 19, 2025
• Post-conference workshop(s): December 20, 2025

• Ruta Mehta (University of Illinois at Urbana-Champaign) – Track A chair
• C Aiswarya (Chennai Mathematical Institute) – Track B co-chair
• Subhajit Roy (IIT Kanpur) – Track B co-chair

• Siddharth Gupta (BITS Pilani, K K Birla Goa Campus) – Chair