The Yamaha MT-07 is a MT series standard motorcycle or UJM with a 689 cc (42.0 cu in) liquid-cooled 4 stroke and 8 valve DOHC parallel-twin cylinder with crossplane crankshaft, manufactured by Yamaha Motor Company from 2014 and US release in 2015. As of 2018, the bike is designated MT-07 in all markets.

A straight-twin engine, also known as an inline-twin, vertical-twin, or parallel-twin, is a two-cylinder piston engine whose cylinders are arranged in a line along a common crankshaft.