Manpreet, some of the best colleges for Japanese language in Delhi have been mentioned below:

• MOSAI (Mombusho Scholars Association of India) : After completing two levels basic course of 12 months,  you can appear for Japanese Proficiency Test JLPT Level N-4 & N-5. After Intermediate (24 months) and Advance (36 Months), you can take JLPT Level N-3 and N-2/N-1 respectively.
• Delhi University- St Stephen's college, Daulat Ram college, Ramjas college : They provide a certificate course, diploma as well as advanced diploma in Japanese.
• Centre for Japanese Studies, JNU : It offers BA, MA, MPhil, and PhD programs in Japanese language, Literature and Culture studies.
• Jawaharlal Nehru Academy of Languages, Bharatiya Vidya Bhavan : It offers a two year course from certificate to diploma level.
• YMCA Institute for Career Studies : It offers one year diploma in Japanese.
• Nihongo Center : It offers various Basic to Advance level classes focused on JLPT. It also provides In-house Corporate training and Interpretation and Translation Services.
• NIHONKAI – Japanese Training Institute : It offers various short term courses from basic to advanced level.
• Mondai Nai Japanese School : The course is divided into four levels – Basic, Intermediate, Pre-Advanced, and Advanced level – each of 6 months. It also provides conversation classes.
• The Japan Foundation : It offers theme- based classes and has access to a rich library. It also has an innovative chat room where you can converse with the native speakers once a month.
• NEC Japanese Language Academy : It offers training for JLPT, interpretation and translation techniques, business practices, classes for engineers and preparation for working in a Japanese company.

Hello manpreet,

There are some best Institute for Japanese language learning in Delhi:-

•MOSAI (Mombusho Scholars Association of India).

•NEC Japanese Language Academy.

•Language Expert.

•YMCA Institute for Career Studies.

•The Japan Foundation, New Delhi.

•Yuimaru Japanese Language School.

I hope this helpful for you.

Best wishes! !