Niels Henrik Abel (1802-1829) masanin lissafin Norwegian ne wanda ya ba da gudummawa mai mahimmanci a fagen ilimin lissafi, musamman a fagen ayyukan algebra da haɗin kai. Kalmar “Niels Abel” yawanci ana amfani da ita wajen nuni ga mutum da gudummawar da ya bayar ga lissafi, maimakon kalma mai ma’ana dabam.
