马自达Luce（日语：マツダ・ルーチェ）乃由日本马自达汽车公司自1966年迄1991年间制造发售的顶级高端车款，也曾一度搭载过该公司著名的转子引擎。

车名Luce源由意大利文，意为「光芒、闪耀」，象征该款车散发耀眼的光辉。该款车外销全世界时，曾经出现几个不同的名字，包括马自达929、马自达RX-4、马自达Cosmo等。

The Mazda Luce (pronounced lu-che) is an executive car that was produced by Mazda in Japan from 1969 until 1991. It was widely exported as the Mazda 929 from 1973 to 1991 as Mazda's largest sedan. Later generations were installed with luxury items and interiors as the Luce became the flagship offering. The Luce was replaced by the Sentia in 1991 which was also exported under the 929 name. The name "luce" was taken from the Italian word for "light".