Ƙungiyar kare muhallin Oregon, kungiya ce mai zaman kanta ta siyasa a cikin jihar Oregon ta ƙassr Amurka, wacce ke fafutukar kafa doka dangane da manufofin muhalli kan matakan gida, jihohi da na kasa. Kuma tana da alaƙa da Muhalli Amurka, ƙungiyar ƙungiyoyin muhalli a cikin jihohi talatin. An kafa shi a Portland, Oregon, yana da mambobi sama da 35,000 a duk faɗin jihar. Hakanan ana haɗin gwiwa tare da Cibiyar Bincike da Manufofin Oregon na Muhalli, ƙungiyar 'yar uwarsa 501(c)(3). An ƙirƙiri muhallin Oregon a cikin 2007 don gina Ƙungiyar Binciken Sha'awar Jama'a ta Jihar Oregon (OSPIRG, wani yanki na Ƙungiyar Binciken Sha'awar Jama'a ) shirye-shiryen muhalli. OSPIRG dalibai ne suka fara shi a Jami'ar Oregon, wanda Ralph Nader ya yi wahayi zuwa gare shi, wanda ya yi rangadin magana a harabar kwaleji a farkon shekarun 1970. Tun daga shekarata 2014, Muhalli Oregon yana aiki akan kamfen don dakatar da siyar da katako ta Bybee a wajen wurin shakatawa na Crater Lake .