The university deemed Stockholm's Karolinska the best post-secondary institution in Sweden and rated it 42nd overall in its compilation of 500 universities, rising from 50th spot last year.
"KI's position is stable," Björn Forslöw, international analyst at Karolinska said in a statement. "The change in ranking is based on very small changes in the weighted criteria."
Karolinska also tied for ninth with the University of Pittsburgh among schools in the fields of clinical medicine and pharmacy, the only non-US university in the list.
Both Uppsala and Stockholm Universities also improved from their 2009 rankings to 66th and 79th from 76th and 88th respectively.
Harvard University and the University of California, Berkeley topped the list. The University of Cambridge was the best non-American institution at fifth.
Rankings are based criteria including the number of Nobel Prizes won by each institution, citations in scientific journals and publications in journals with high impact factor.
Eight other Swedish schools also made the list:
Lund University: 106th
Chalmers University of Technology, Gothenburg: 203rd
Royal Institute of Technology (Kungliga Tekniska högskolan, KTH), Stockholm: 231st
Swedish University of Agricultural Sciences (Sveriges Lantbruksuniversitet, SLU), Ultuna, Uppsala: 237th
Umeå University: 250th
University of Gothenburg: 265th
Stockholm School of Economics (Handelshögskolan i Stockholm): 346th
Linköping University: 433rd