Is AIIMS Delhi the world’s no. 1 MBBS college?

No, AIIMS Delhi is India's no. 1 college and not the world's no.1 college. Rank-wise, the top colleges in India are

• AIIMS Delhi
• CMC Vellore
• BHU
• KMC Manipal 
• JIPMER 
• KGMU

If you are looking for top medical colleges across the globe, here are a few.

1. Harvard University, USA- Situated in Boston, it has been ranked the best medical college by Times Higher Education World Ranking; QS Best College ranking, and by several other rankings with an acceptance rate of 4 % only. 
2. University of Cambridge, UK-. The medical school provides top-notch research opportunities in addition to superior-quality medical education.
3. University of Oxford, UK- It is the oldest University in England. A plethora of courses are offered from which you can choose the ones that intrigue you. Some such subjects taught are diagnostic imaging, neuroscience, clinical embryology, and others.
4. Massachusetts Institute of Technology (MIT), USA- MIT’s Medical School is in collaboration with the medical school of Harvard University. But it’s important to note that it is a completely different school from Harvard’s Medical School.
5. Johns Hopkins University, USA- This old university is known for its excellent research and education in medicine and public health. This university is an excellent option for medical aspirants. 
6. Stanford University, USA- This is a well-regarded research-driven medical school that provides excellent education and research opportunities to its students. 

So, India's No. 1 medical college is AIIMS and internationally it is Harvard University followed by many others.