Bjarni Jónsson, fæddur 6. júní 1966, er íslenskur stjórnmálamaður sem gegndi þingsetu fyrir Norðvesturkjördæmi á árunum 2021 til 2024. Hann var fyrst kjörinn á þing á lista Vinstrihreyfingarinnar – græns framboðs en sat síðar sem óháður alþingismaður utan flokka. Á starfsferlinum starfaði hann sem forstöðumaður áður en hann gekk í stjórnmál.
Bjarni Jónsson, born 6 June 1966, is an Icelandic politician who served as a member of parliament for the Northwest Constituency from 2021 to 2024. He was initially elected on the Left-Green Movement list but later served as an independent member outside party affiliation. Prior to entering politics, he worked as a director in his professional career.