The TEI TS1400 is a 1,400 shp turboshaft engine for rotary wing applications.

It is developed by the Tusaş Engine Industries (TEI) in Turkey.

The "Turboshaft Engine Development Project" (Turkish: Turboşaft Motor Geliştirme Projesi, TMGP), launched on 7 March 2017, aims to reduce foreign dependency while increasing indigenousness rates.

[3] The first installment of the TEI TS1400 is planned on the TAI T625 Gökbey, a twin-engined light transport/utility helicopter developed by Turkish Aerospace Industries.

[4] It was also announced that the engine may be used for T129 ATAK attack helicopter in the future.