Carlos Toshiki Takahashi (Japanese: カルロス・トシキ・タカハシ, Hepburn: Karurosu Toshiki Takahashi, born April 7, 1964) is a Japanese Brazilian singer and farmer known for being the singer for the Japanese band Omega Tribe from 1986 to 1991. During his time as the lead vocalist of Omega Tribe, he was known for having a soft voice, with the singles "Kimi ha 1000%" and "Aquamarine no Mama de Ite" being hit singles on the Oricon charts.

Born in Brazil to Japanese parents, Toshiki travelled to Japan in 1981 to pursue a career in music, being chosen by producer Koichi Fujita to be the new lead vocalist of Omega Tribe after the disbandment of the previous incarnation of the band. Toshiki and 1986 Omega Tribe were successful, and with one of the members leaving, the band was renamed to Carlos Toshiki & Omega Tribe in 1988 before disbanding in 1991.

After a short solo career, Toshiki retired and returned to Brazil, becoming known for being a garlic specialist and entrepreneur and succeeding in domestically-grown garlic. He returned to music in 2017 with the Japanese-American jazz band B-EDGE, and tours with them in Japan while growing garlic in Brazil.