查塔努加（Chattanooga）是美国田纳西州汉密尔顿县和马里恩县境内的一座城市，也是前者的县治所在，位于田纳西河畔，邻近佐治亚州，面积370.8平方公里。根据美国2010年人口普查，共有167,674人，其中白人占58.0%、非裔美国人占34.9%、亚裔美国人占2.0%。

查塔努加是仅次于孟菲斯、纳什维尔和诺克斯维尔的州第四大城市。

本地学校田纳西大学查塔努加分校是田纳西大学的分校之一，在2009年这所学校的商学院得到了美国南部排名的前五十名。

Chattanooga is the fourth-largest city in the U.S. state of Tennessee, with a population of 167,674 as of the 2010 census, and an estimated population of 171,279 in 2012. It is the seat of Hamilton County. Located in southeastern Tennessee in East Tennessee, on Chickamauga Lake and Nickajack Lake, which are both part of the Tennessee River, Chattanooga lies approximately 120 miles (190 km) to the northwest of Atlanta, Georgia, 120 miles (190 km) to the southwest of Knoxville, Tennessee, about 135 miles (217 km) to the southeast of Nashville, Tennessee, about 120 miles (190 km) to the northeast of Huntsville, Alabama, and about 148 miles (238 km) to the northeast of Birmingham, Alabama. Chattanooga abuts the Georgia border and there are three major interstate highways in its vicinity: I-24, I-75, and I-59.