The 342nd All-Weather Squadron (, ), callsign "Sparta" (), was a squadron in service with the Hellenic Air Force from 1955 to 2003.
The squadron was established in 1955 as the 342nd Day Interceptor Squadron (342 ÃÂÿïÃÂñ ÃÂýñÃÂñïÃÂùÃÂֈÃÂüÃÂÃÂñÃÂ), equipped with F-86E Sabres.
The F-86Es were replaced with F-84Fs in 1964, and the squadron was re-designated 342nd Fighter-Bomber Squadron (343 ÃÂÿïÃÂñ ÃÂùÃÂþõÃÂÃÂ/ÃÂÿüòñÃÂôùÃÂüÿÃÂ). In 1969, the squadron was re-equipped with F-102s, and received the designation of 342nd All-Weather Squadron (342 ÃÂÿïÃÂñ àñýÃÂÃÂàÃÂñùÃÂÿÃÂ).
In 1975 the squadron was re-equipped with Mirage F1CG. With the withdrawal of the F1CG from service, the squadron was disbanded in June 2003.