Grigorovich M-5 (alternative designation Shch M-5, sometimes also Shchetinin M-5) was a successful Russian World War I-era two-bay unequal-span biplane flying boat with a single step hull, designed by Grigorovich.

The aircraft designer Dmitry Pavlovich Grigorovich completed his first flying boat (the model M-1) in late 1913, and produced a series of prototypes, gradually improving the design, until the M-5 appeared in the spring of 1915, which was to be his first aircraft to enter series production, with at least 100 being produced, primarily to replace foreign built aircraft, including Curtiss Model K and FBA flying boats.

Aft of the step the hull tapered sharply into little more than a boom, supporting a characteristic single fin and rudder tail unit, which was braced by means of struts and wires.

Only one example survives today in the Istanbul Aviation Museum in Turkey, preserved in Ottoman Air Force markings.

[citation needed] Data from Thulinista HornettiinGeneral characteristics Performance Armament