The Valmet Tuuli was a family of prototype aircraft developed in Finland to meet the diverse needs of the Finnish Air Force. The program spanned several decades and evolved through three distinct iterations: the Tuuli I, Tuuli II, and Tuuli III. The initial Tuuli I was designed and constructed by the Finnish State Aircraft Factory, known as Valtion lentokonetehdas (VL), with the first prototype completing its flight in 1941. Only one Tuuli I was ever built. Following the merger of VL into the broader industrial conglomerate Valmet in 1951, the program continued with the Tuuli II. One Tuuli II prototype was produced, but the configuration was abandoned after the aircraft crashed, resulting in a loss of life.
The final iteration, the Tuuli III (ICAO code VLMT), was completed in 1957 at Valmet's factory in Tampere. Designed as a versatile multi-role aircraft, the Tuuli III was intended to function as a two-seat primary trainer with aerobatic capabilities, a three-seat utility aircraft, or a four-seat liaison plane. Notably, the airframe was designed to accommodate a standard-size stretcher for casualty evacuation, a level of flexibility uncommon for primary trainers of the 1950s. Visually, the Tuuli III was a low-wing monoplane featuring fixed tricycle landing gear and a single nose-mounted piston engine.
Despite the versatility of the Tuuli III, the aircraft never entered series production, and only one airframe of this type was manufactured. The program's lack of production, alongside the mixed results of the contemporary Valmet Vihuri trainer, underscores the economic and technical difficulties Finland faced in maintaining a national aircraft industry during the early Cold War. While the Tuuli prototypes were intended for the Finnish Air Force, they never reached operational squadron service or saw combat. Today, no surviving Tuuli airframes are confirmed in the public record, and the aircraft remains a historical example of the transition from the state-run VL factory to the diversified industrial operations of Valmet.