Blue Three was the designation utilized by the third pilot in Blue Squadron, a squadron of starfighters; the term itself served as their callsign.
During the Clone Wars, specifically in the Battle of Ryloth, Slammer, a clone trooper pilot, served as Blue Three within Blue Squadron under the command of Jedi Commander Ahsoka Tano.
Jaldine Gerams was the pilot operating under the designation Blue Three during the Battle of Scarif.
During the Battle of Vrogas Vas, a pilot fighting for the Rebel forces was known as Blue Three.
In the Battle of Jakku, the pilot who flew under the Blue Squadron banner as a member of the New Republic's 77 Squadron used this callsign.
Prior to the Battle of D'Qar, a Resistance X-wing pilot with the callsign Blue Three participated in a training exercise with Blue Leader Tallissan Lintra near an ionized gas cloud.
Jessika Pava, a pilot in the Resistance, served as Blue Three in Blue Squadron some three decades following the Battle of Endor.