Registration for INO 2026 is now open and will continue till 19 January 2026 (extended deadline). This deadline will not be extended further.

If you have qualified for INO 2026 in one or more subjects, please login using your NSE Roll No., date of birth and email id. (If you face problems in entering your NSE Roll no., please clear your browser cache and try again.)

Lists of students qualified for INO in different subjects are available on the IAPT website.

You may choose the examination centre during registration. NO REQUESTS FOR CHANGE OF EXAMINATION CENTRE WILL BE ENTERTAINED AFTER REGISTRATION CLOSES ON JANUARY 17.

The full addresses of the INO centres are available here.

You may login multiple times during this period should you need to modify any of the registration data.

If your Name, Class, or Gender is incorrectly spelled/recorded, please request for a change (option on top left). For verification of your request, please send a supporting document (Aadhar card or passport or birth certificate) to ino@hbcse.tifr.res.in

STUDENTS WHO HAVE QUALIFIED IN MULTIPLE SUBJECTS IN INO (AND/OR INMO) MUST DECLARE THEIR ORDER OF PREFERENCE FOR ATTENDING OCSC/IMOTC DURING REGISTRATION. They can sit in multiple examinations in INO and the evaluation of the same will NOT be affected by the order of preference for OCSC/IMOTC.

This registration is only relevant for students who have qualified for INO 2026 through NSE 2025 (check NSE 2025 results on the IAPT website ). Other interested students may visit the HBCSE Olympiad website to know how to participate in the Olympiad programme next year.