There are 70 mathematicians whose last name begin with BJ.
| Bjaou, K. | Conservatoire National des Arts et Metiers | 1999 |
| Bjarnadottir, Margret | Massachusetts Institute of Technology | 2008 |
| Bjarnason, Harold | University of Wisconsin-Madison | 1967 |
| Bjarnason, Jens | Northwestern University | 1993 |
| Bjelaković, Igor | Technische Universität Berlin | 2004 |
| Bjelde, Antje | Technische Universität Berlin | 2018 |
| Bjelica, Momčilo | University of Belgrade | 1991 |
| Bjerk, David | University of Wisconsin-Madison | 2003 |
| Bjerke, Todd | University of Delaware | 2002 |
| Bjerkevik, Håvard | Norges Teknisk-Naturvitenskapelige Universitet | 2020 |
| Bjerklöv, Kristian | Kungliga Tekniska Högskolan (KTH) | 2003 |
| Bjerknes, Carl | Universitetet i Oslo | 1848 |
| Bjerknes, Vilhelm | Universitetet i Oslo | 1892 |
| Bjerre, Nis | Aarhus University | 1984 |
| Bjerve, Steinar | University of California, Berkeley | 1974 |
| Bjon, Sten | Åbo Akademi University | 1975 |
| Björck, Åke | Kungliga Tekniska Högskolan (KTH) | 1968 |
| Björck, Göran | Stockholm University | 1966 |
| Bjørdal, Frode | University of California, Santa Barbara | 1993 |
| Björgen, Johan | ||
| Bjork, Andrew-David | University of California, Irvine | 2009 |
| Bjork, Gavin | Washington State University | 1966 |
| Bjork, Kathe | University of Colorado Health Sciences Center | 2006 |
| Bjork, Robert | Stanford University | 1966 |
| Björk, Gunnar | Kungliga Tekniska Högskolan (KTH) | 1988 |
| Björk, Jan-Erik | Stockholm University | 1970 |
| Björk, Magnus | Chalmers Tekniska Högskola | 2006 |
| Björk, Marcus | Uppsala Universitet | 2015 |
| Björk, Staffan | Göteborgs universitet | 2000 |
| Björk, Tomas | Kungliga Tekniska Högskolan (KTH) | 1981 |
| Bjørkavåg, Magnar | Universitetet i Bergen | 2012 |
| Bjorke, Oyvind | ||
| Bjorkegren, Daniel | Harvard University | 2014 |
| Bjorken, James | Stanford University | 1959 |
| Björkholdt, Elise | Göteborgs universitet | 2000 |
| Bjorklund, Carolyn | Princeton University | 1979 |
| Björklund, Johan | Uppsala Universitet | 2011 |
| Björklund, Michael | Kungliga Tekniska Högskolan (KTH) | 2009 |
| Björklund (Högberg), Johanna | Umeå University | 2007 |
| Bjorkman, Marten | Kungliga Tekniska Högskolan (KTH) | 2002 |
| Bjorkman Morrison, Beth | Iowa State University | 2020 |
| Bjorksten, Nils | Michigan State University | 1993 |
| Björkström, Anders | Stockholm University | 2007 |
| Björkwall, Susanna | Stockholm University | 2011 |
| Bjorland, Clayton | University of California, Santa Cruz | 2008 |
| Björling, Carl | Uppsala Universitet | 1863 |
| Björling, Emanuel | Uppsala Universitet | 1830 |
| Bjorling-Sachs, Iliana | Rutgers University, New Brunswick | 1993 |
| Bjørlykke, Knut | ||
| Bjorn, Paul | California Institute of Technology | 1985 |
| Björn, Anders | Linköpings Universitet | 1995 |
| Björn, Jana | Linköpings Universitet | 1996 |
| Björnberg, Jakob | Kungliga Tekniska Högskolan (KTH) | 2009 |
| Björnberg, Jakob | University of Cambridge | 2009 |
| Bjorndahl, Adam | Cornell University | 2014 |
| Bjørndal, Endre | Norges Handelshøyskole | 2002 |
| Bjørndal, Mette | Norges Handelshøyskole | 2000 |
| Bjørndalen, John Markus | Universitetet i Tromsø – Norges arktiske universitet | 2003 |
| Bjorner, Nikolaj | Stanford University | 1999 |
| Björner, Anders | Stockholm University | 1979 |
| Bjørnestad, Øistein | Université de Genève | 1972 |
| Björnestal, Björn Olov | Kungliga Tekniska Högskolan (KTH) | 1977 |
| Bjornlund, Henning | University of South Australia | 1999 |
| Bjornson, Eric | Stanford University | 1999 |
| Björnson, Emil | Kungliga Tekniska Högskolan (KTH) | 2011 |
| Bjornsson, Yngvi | University of Alberta | 2002 |
| Björnsson, Hjörtur | University of Iceland | 2023 |
| Bjørnstad, Jan | University of California, Berkeley | 1978 |
| Bjørstad, Petter | Stanford University | 1980 |
| Bjursell, Johan | George Mason University | 2009 |