The Acura TSX is an entry-level luxury car manufactured by Honda. Introduced in April 2003, it was sold only in the United States and Canada, but from the 2009 model year on it will also be available in Mexico. It is sold in North America under the Acura luxury marque, where it filled the gap as Acura's 4-door, entry-level sedan when the Integra sedan was discontinued in 2001 (1996 in Canada since the EL was the Integra sedan's replacement there). The TSX would also eventually replace the Acura RSX in the US (which in turn succeeded the Acura Integra coupe). As of 2008, the TSX is the smallest vehicle in the Acura model line, other than the Civic-based CSX (and the preceding 1.6/1.7EL) sold only in Canada. All TSXs are built in Sayama, Saitama, Japan. The TSX is badge engineered from the CL-series Accord (also known as the European Accord or JDM Accord) sold in Europe, Japan, Australia and New Zealand (). The TSX initially had a restyled interior and different suspension tuning than the European Accord when it was introduced; however since 2008 the interior is now standardized for all three markets. In the Australian & New Zealand, the CL-series is sold Accord Euro, a smaller mid-size car, where the USDM Accord is sold in the large car category. In North America, the TSX is sold alongside the mid-size luxury Acura TL, which is based on the USDM Accord, which in itself is a rebadged JDM Honda Inspire.

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