| Joaquín Collar Serra | |
| Full Name: | Joaquín Collar Serra |
| Birth Date: | 25 November 1906 |
| Birth Place: | Figueras, Spain |
| Death Date: | (presumed) |
| Death Place: | Vicinity of Villahermosa, Mexico |
| Death Cause: | Air accident (presumed) |
| Nationality: | Spanish |
| Known For: | Took part in the historic flight of the Cuatro Vientos from Seville, Spain to Camagüey, Cuba on 10–11 June 1933 |
Joaquín Collar Serra (25 November 1906 - 20 June 1933) was a Spanish military aviator. He was born in Figueras, Spain.
In 1933, together with Mariano Barberán y Tros de Ilarduya and Sergeant Modesto Madariaga, he flew the Cuatro Vientos, a Br.19 TF Super Bidon built specially for this flight, from Spain to Cuba. The flight, which took 39 hours and 55 minutes, departed Seville on at 4:40 on 10 June 1933 and arrived in Camagüey at 20:45 (local time) on 11 June 1933, after a flight of 7320 km.
The plane departed for Mexico City on 20 June 1933, without Madariaga on board, and disappeared in flight, being last sighted in the vicinity of Villahermosa, Mexico. No trace of the plane or of its two occupants was subsequently found.[1]