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- Dušan Pagon (1955 - )
- Bernard Pergerl (1440 - 1501)
- Andrej Perlah (1490 - 1551)
- Peter Petek (1944 -)
- Iztok Peterin (1974 -)
- Marko Petkovšek(1955 -)
- Tomaž Pisanski (1949 -)
- Josip Plemelj (1873 - 1967)
- Bor Plestenjak
- Primož Potočnik (1971 -)
- Jože Povšič (1907 - 1985)
- Andreja Prijatelj (1953 - 2002)
- Niko Prijatelj (1922 - 2003)
- Ivan Pucelj
Read more about this topic: List Of Slovenian Mathematicians