图森（英文：Tucson，又译杜桑或土桑），位于美国亚利桑那州南部皮马县（Pima County），是该州第二大城市（凤凰城为第一大）、美国第32大城市和第52大都会区。根据2010年人口普查，图森共有人口520,116人。而图森都会区则共有人口989,569人图森也是皮马县的县治所在。该城位于荒漠山谷区，三面环山。干旱充满阳光的气候长期以来吸引着不少游客，带来了持续增长的疗养中心和退休者的到来。光学制造、航空以及电子工业是该城的特色。同时联邦、地方政府以及学院提供了大量就业需要。亚利桑那大学与美国国家光学天文台总部位于图森。戴维斯－蒙森空军基地也位于该城辖区。

Tucson (/ˈtuːsɒn/ /tuːˈsɒn/) is a city and the county seat of Pima County, Arizona, United States, and home to the University of Arizona. The 2010 United States Census put the population at 520,116, while the 2013 estimated population of the entire Tucson metropolitan statistical area (MSA) was 996,544. The Tucson MSA forms part of the larger Tucson-Nogales combined statistical area (CSA), with a total population of 980,263 as of the 2010 Census. Tucson is the second-largest populated city in Arizona behind Phoenix, both of which anchor the Arizona Sun Corridor. The city is located 108 miles (174 km) southeast of Phoenix and 60 mi (97 km) north of the U.S.-Mexico border. Tucson is the 33rd largest city and the 59th largest metropolitan area in the United States. Roughly 150 Tucson companies are involved in the design and manufacture of optics and optoelectronics systems, earning Tucson the nickname Optics Valley.