Ɗan Sanda jam'i kuma shine Ƴan sanda ƙungiya ce dake karkashin gwamnati kasa, waɗanda aikin su shine tilasta bin doka, taimakawa cikin gaggawa, warware laifuka da kare dukiya. Mutumin da yake aiwatar da wannan aikin an san shi da Ɗan Sanda. Suna aiki ne daga ofishin Ƴan sanda. An horar da ‘yan sanda kan taimakon gaggawa da ceto, saboda galibi jami’an ƴan sanda suna ɗaya daga cikin mutanen farko da suke isa wurin da mutane ke rashin lafiya ko rauni, kamar hatsarin mota, ko gobara. Ana iya kiran hukumar 'rundunar yan sanda ' yan sanda, sashin 'yan sanda, sabis na' yan sanda, rikitarwa, masu kula da jama'a ko sabis na kariya . Jendarmerie ɗan sanda ne wanda yake wani ɓangare na sojoji, kodayake membobinta ba safai suke yin aikin soja ba. Yawancin rundunonin 'yan sanda a Amurka suna kiran kansu da "[Wurin ƴan sanda", kamar Sashen 'Yan Sanda na Birnin New York . Yawancin lokaci ana san rundunar 'yan sanda ta Jiha da ko dai "[State] Highway Patrol" ko kuma "Yan Sanda na Jiha".