Jagdgruppe 88 (J/88) was a German Condor Legion fighter group serving in the Spanish Civil War. J/88 consisted of a headquarters (Stab) and four squadrons (Staffeln), although the 4th Staffel was short-lived. J/88 had formed on 3 November 1936.

The Condor Legion was a unit of military personnel from the air force and army of Nazi Germany’s Wehrmacht which served with the Nationalist faction during the Spanish Civil War. The Condor Legion developed methods of strategic bombing that were used widely during the Second World War. The bombing of Guernica was the most infamous operation by the Condor Legion. Hugo Sperrle commanded the unit's aircraft formations and Wilhelm Ritter von Thoma commanded the ground element.