A fess is a heraldic charge.
Fess or FESS may also refer to:
People
Simeon D. Fess (1861–1936), American politician and educator, congressman and senator from Ohio Fess Parker (1924–2010), American actor Professor Longhair (1918–1980), blues singer and pianist also known as "Fess" Fess, nickname of Charlie Johnson (bandleader) (1891–1959), American jazz bandleader and pianist Fess Williams (1894–1975), American jazz musician
Other uses
Functional endoscopic sinus surgery, also brandname of a simple saline solution for sinus irrigation Fess Hotel, Madison, Wisconsin, on the National Register of Historic Places Fess Ferenc, a fictional character from Brian Lumley's Necroscope (series) novels FESS, an Open Source Enterprise Search Server based on Elasticsearch FESS, Flywheel Energy Storage System (cf Flywheel_energy_storage#Pulse_power)