Joseph Priestley (; 24 March [O.S. 13 March] 1733 <unk> 6 February 1804) je omo ile England ti o je olori awon olori esin Separatist, natural philosopher, chemist, innovative grammarian, multi-subject educator, and liberal political theorist ti o se atejade lori 150 ise. O ti je itan-itan ni a fun ni igbasilẹ ti oxygen, ti o ti ya sọtọ ni ipo gaasi rẹ, biotilejepe Carl Wilhelm Scheele ati Antoine Lavoisier tun ni awọn ẹtọ to lagbara si igbasilẹ naa. Lakoko igbesi aye rẹ, orukọ imọ-jinlẹ pataki ti Priestley da lori iṣawari rẹ ti omi soda, awọn iwe rẹ lori itanna, ati igbasilẹ rẹ ti ọpọlọpọ "awọn afẹfẹ" (awọn gaasi), olokiki julọ ti Priestley ni ohun ti a pe ni "dephlogistically dephlogized air" (oxygenated air). Sibẹsibẹ, ipinnu Priestley lati daabobo imọ-jinlẹ ti Joseph Priestley ati ohun ti yoo di sẹsẹkẹsẹ sẹsẹ sẹsẹ laarin awujọ imọ-jinlẹ: Tani
onímọ̀ nípa ẹ̀sìn, onímọ̀ nípa ìṣẹ̀dá, onímọ̀ nípa kẹ́míkà, onímọ̀ nípa gírámà, olùkọ́ lórí oríṣiríṣi ẹ̀kọ́, àti onímọ̀ nípa ètò ìṣèlú tí ó tẹ ìwé tó lé ní àádọ́jọ jáde