Joseph Priestley (; 24 Maris [O.S. 13 Maris] 1733 <unk> 6 Fabrairu 1804) ya kasance masanin ilimin tauhidi na Ingila na karni na 18, masanin kimiyyar halitta, masanin kimiyyar sunadarai, mai ilimin harshe mai mahimmanci, mai koyar da darussan da yawa, da kuma mai ilimin siyasa mai sassaucin ra'ayi wanda ya wallafa fiye da ayyukan 150. An ba shi tarihi tare da gano iskar oxygen, bayan da ya ware shi a cikin yanayin gas, kodayake Carl Wilhelm Scheele da Antoine Lavoisier suma suna da da'awar da'awar wannan binciken. A lokacin rayuwarsa, sanannen sanannen ilimin kimiyya na Priestley ya dogara ne akan ƙirƙirar ruwan soda, rubuce-rubucensa game da wutar lantarki, da kuma gano "iska" da yawa (gases), wanda aka fi sani da shi a matsayin "dephlogistic air" (oxygenated air). Duk da haka, ƙudurin Priestley na kare ka'idar phlogiston?
wani masanin ilimin tauhidi na Ingila na karni na 18, masanin kimiyyar halitta, masanin ilmin sunadarai, mai ilimin harshe, mai koyar da darussa da yawa, kuma mai ilimin siyasa na 'yanci wanda ya wallafa ayyukan 150