There are 15 mathematicians whose last name begin with II.
| Iiams, Joel | Colorado State University | 1993 |
| Iiams, Michele | University of North Dakota | 2002 |
| Iida, Fumiya | Universität Zürich | 2005 |
| Iida, Hajimu | ||
| Iida, Masatoshi | University of Tokyo | 1996 |
| Iida, Shuichi | University of Tokyo | 2008 |
| Iijima, Ryota | Harvard University | 2016 |
| Iima, Kei-ichiro | Okayama University | 2009 |
| Iino, Kenji | Stanford University | 1992 |
| Iino, Riichi | Osaka University | 1962 |
| Iinoya, Fujio | California Institute of Technology | 1993 |
| Iitaka, Shigeru | University of Tokyo | 1970 |
| Iizuka, Keigo | Harvard University | 1961 |
| Iizuka, Norihiro | Columbia University | 2003 |
| Iizuka, Shinji | Tohoku University | 2008 |