INO Exam 2026: Registration, Eligibility, Exam Date, Syllabus 

The Indian National Olympiad (INO) is one of the most prestigious academic contests in India for school-going students who are passionate about science and mathematics. Organized under the supervision of the Homi Bhabha Centre for Science Education (HBCSE), For Indian students who dream of competing at the international level, the INO is a key step in the selection process for representing India in Science and Mathematics Olympiads worldwide.

Aakash Institute has been guiding and assisting students who aspire to become Olympiad winners for the last many years. With a strong understanding of INO concepts, analytical skills, and advanced problem-solving abilities,With expert guidance from Aakash, students can strengthen their concepts and prepare effectively to succeed in the INO Olympiad exam and higher levels of the selection process.

What is INO ( Full Form )?

The INO full form is the Indian National Olympiad. It is an Indian nationwide Olympiad program conducted for various subjects as follows:

•       INMO – Indian National Mathematical Olympiad

•       INPhO – Indian National Physics Olympiad

•       INChO – Indian National Chemistry Olympiad

•       INBO – Indian National Biology Olympiad

•       INAO – Indian National Astronomy Olympiad

Students who qualify in the first stage of the exam move on to the next advanced levels of Olympiad selection process. 

INO Olympiad Aim

The INO Olympiad 2026 is designed to identify talented skilled Indian students who show strong potential in Mathematics and Science. This prestigious competition focuses on building conceptual clarity, sharpening logical reasoning skills, and encouraging the real-world application of scientific principles. Through a structured and merit-based selection process by Olympiad.

Mandatory Registration Details INO 2026

Indian National Olympiad (INO) 2026 Examinations: Tentative Timetable

Note: For INJSO, please refer to the special note issued on the official page HBCSE website for accurate information.

INO 2026 Registration

• Mandatory INO registration is open from 6 January to 17 January 2026.
• All students who have qualified through the respective NSE must register online to appear in the INO exam. Failure to register will lead to disqualification from INO 2026.

How to Register for INO 2026?

Indian Students must complete their registration through the official INO registration portal at the HBCSE website: https://secure.hbcse.tifr.res.in/ino

INO Exam 2026

The INO 2026 exam structure is designed to test students beyond their school syllabus. It focuses on multiple factors:

• Deep understanding of concepts
• Logical and analytical reasoning
• Multi-step problem solving skills

Each subject exam has a different pattern, but all make a point of thinking skills rather than learning. 

Note : INO 2026 Hall tickets are released online on 23 January 2026.

INO Exam Eligibility

The INO exam 2026 eligibility criteria depend on the subject and stage of the Olympiad. Generally: Students of Classes 8 to 12 are eligible (varies by subject)

• Must qualify the respective NSE exam to appear for INO
• Must be an Indian citizen (OCI eligible until OCSC).

Note: To be eligible for final selection and OCSC team stages, candidates should hold a valid Indian passport for international Olympiad requirements.

Aakash helps students understand eligibility rules and choose the right Olympiad track based on their academic level.

Tentative Schedule for INO-related Actions

Tentative Schedule for OCSC / IMOTC Training Camps

INO Exam Syllabus

The INO syllabus is broadly equivalent to high school science curriculum but focused on higher-order reasoning, problem solving, and concepts beyond than regular textbooks.

INO Subject-wise Syllabus

• Physics / Chemistry / Biology 
• Astronomy (INAO).
• Junior Science (INJSO)

Detailed syllabus PDFs and subject-wise topic lists are available on the official HBCSE syllabus page

INO Exam Papers

Practicing INO exam previous papers is one of the most effective ways to prepare for the Olympiad. These papers help students:

• Understand the question pattern
• Improve time management
• Identify weak areas
• Build confidence for the real exam

INO Exam Papers & Answer Keys

After the exam, INO exam papers and provisional solutions are published on the official HBCSE Olympiad website for students to review

Answer Key & Solutions

• Provisional solutions were published around 3 February 2026.
• Students can submit comments on the provisional solutions between February 3 and 8, 2026.
• Final answer keys and INO marks are released on 21 February 2026.

Also Check previous year:  INO Answer Key & Solutions Downloads

INO Olympiad 2026 Selection Process

The selection procedure for INO Olympiad 2026 is conducted in multiple levels to ensure only the most deserving students qualify and consider to appear in next level: 

• Stage 1 – National Standard Examinations (NSEs):.

• Stage 2 – INO Examinations:

Qualified candidates move to the Indian National Olympiads, including INMO, INPhO, INChO, INBO, and INAO.

• Stage 3 & Stage 4 – Orientation Camps and International Selection:

Top performers are invited for intensive training camps, followed by the final selection of students who will represent India at the International Olympiads.

Benefits of INO Olympiad

Participating in the INO exam 2026 provides several long-term advantages:

• Recognition at national and international level
• Boosts academic profile
• Develops scientific temperament
• Builds Strong analytical and logical thinking skills

The Olympiad journey encourages Indian students to explore science and mathematics beyond textbooks.

Conclusion

The INO 2026 exam is an opportunity for Indian students aspiring to excel in science and mathematics to represent the country on the international platform. With expert guidance, consistent practice using previous years INO question papers, and mentorship from Aakash, students can prepare effectively and confidently for success in the INO Olympiad.

FAQs

Q1. What is INO ?

INO refers to the Indian National Olympiad examinations conducted by HBCSE to select students for International Science and Mathematics Olympiads. It is the second stage after NSE (National Standard Examinations).

Q2. Which subjects are included under the INO Olympiad?

INO is conducted for the following subjects:

• INMO – Mathematics
• INPhO – Physics
• INChO – Chemistry
• INBO – Biology
• INAO – Astronomy
• INJSO – Junior Science

Q3. Who conducts the INO Olympiad?

INO is organized by the Homi Bhabha Centre for Science Education (HBCSE), under the Olympiad program of India.

Q4. What is the aim of the INO Olympiad?

The INO Olympiad aims to identify and nurture talented Indian students with strong aptitude in science and mathematics and prepare them for international Olympiads.

Q5. When is INO 2026 registration open?

INO 2026 registration is open from 6 January to 17 January 2026.

Q6. Is INO registration mandatory?

Yes. All Indian students who qualify NSE must register on the official HBCSE website.
Failure to register for INO will lead to disqualification from the INO 2026 exam.

Q7. Where can I register for INO 2026?

Students can register for INO Exam by official website:
👉 https://secure.hbcse.tifr.res.in/ino

Q8. When will INO 2026 hall tickets be released?

INO 2026 Admit card/hall ticket available for download on 23 January 2026.

Q9. Can students raise objections to the answer key?

Yes. Students can submit comments on provisional solutions after exam between 3 February and 8 February 2026.