Blaise Pascal masanin lissafin Faransa ne, masanin kimiyyar lissafi, mai ƙirƙira, kuma masanin falsafa wanda ya rayu a ƙarni na 17. Ya ba da gudummawa sosai ga fannoni da yawa, ciki har da lissafi, kimiyyar lissafi, da falsafa. An fi sanin Pascal da aikinsa a ka'idar yiwuwar, inda ya tsara abin da ake kira Pascal's theorem a yanzu. Ya kuma ƙirƙiro na'urar lissafi na farko, wanda aka fi sani da Pascaline, wanda yana ɗaya daga cikin na'urori na farko masu iya yin ƙididdiga masu rikitarwa. A cikin falsafa, an san Pascal don Pensées, tarin tunani na falsafa da tauhidi game da yanayin ɗan adam da yanayin bangaskiya.