The Best Universities for PhDs in Biological Sciences in the USA (2026)

The USA is home to some of the world’s most diverse and high-impact biological sciences research environments, spanning everything from molecular biology to ecology.

This guide highlights the top American universities for PhD study in biological sciences using global rankings and helps you understand how to use this information when comparing research options.

There are many reasons why someone might want to study Biological Sciences at a university in the USA. Here are just a few:

• From Marine Biology to Molecular Biology, the USA offers a broad spectrum of research topics in Biological Sciences. Candidates can align themselves with any niche that captivates their interest or fuels their academic curiosity.
• US institutions are home to highly esteemed faculty who have made significant contributions to the field of Biological Sciences. Their extensive knowledge and experience offer students an enriched learning experience.
• The strong ties between academic institutions and biotechnology or pharmaceutical industries in the USA open opportunities for internships, collaboration, and applied research prospects.
• Universities in the USA attract international students from all corners of the globe creating diverse educational settings that enrich both cultural understanding as well as academics. This multicultural environment exposes students to different perspectives within their field of study.

The following tables give the 10 top universities in the USA for Biological Sciences, according to global and local university rankings. It can show you which American universities are amongst the best in the world - and help you compare institutions on an international level.

This information is based on the latest rankings tables, researched and published by Times Higher Education, QS and Academic Ranking of World Universities (ARWU).

Each ranking system uses its own methodology, with different factors having more or less influence on a university's result.

Our guide has more information on how to use international rankings to decide on the best research universities for PhD study.

The Times Higher Education rankings are strong in academic focus and diverse teaching metrics, but do not include employer-specific metrics. Additionally, the rankings may not include all specialist institutions.

The QS World University Rankings are designed to meet the needs of prospective students, with more weight given to student-centric metrics such as staff/student ratio, international recruitment and employer opinion. The rankings are balanced between qualitative and quantitative data, but give less weight to research than some other rankings.

The ARWU rankings reflect the presence of elite academics and the future academic success of graduates. However, they do not directly assess the quality of education at a university or take into account other aspects of university performance.

Tips from the author

I hope this guide gives you a clear overview of where biological sciences research thrives in the USA. Beyond rankings, pay attention to faculty expertise and lab resources in your area of interest as that’s what will shape your day-to-day PhD experience. Thirdly, reach out early to potential supervisors and funding bodies to ask about available projects and support. Timing can be key when applying to top US programmes.