British Forces
Force K
Aurora—Captain W. G. Agnew (in overall command)
Penelope—Captain A. D. Nichol
Lance—Lt. Cdr. R. W. F. Northcott
Lively—Lt. Cdr. W. F. E. Hussey

Italian Forces
3rd Cruiser Division
   Vice-Adm. Bruno Brivonesi (in overall command)
Trieste—Captain Rouselle
Trento—Captain Parmigiano

13th DD Flotilla
   Commander Capponi
Granatiere—Commander Capponi
Fuciliere—Commander F. Cerrina Feroni
Bersagliere—Commander Giuseppe de Angioy
Alpino—Commander Agostino Calosi

Close Convoy Escort
   Captain Ugo Bisciani
Maestrale—Captain Bisciani
Fulmine*—Lt. Commander Milano
Euro—Lt. Commander Cigala Fulgosi
Grecale—Commander Giovanni di Gropello
Libeccio—Commander Tagliamonte
Oriani—Commander Chinigo

Convoy
San Marco* (3,113 tons; German)—Captain Paul Ossemberg
Duisberg* (7,389 tons; German)—Captain Arno Osteermeier
Minatitlan* (7,599 tons; Italian tanker)—Captain Guido Incagliati
Maria* (6,339 tons; Italian)—Captain Angelo Pogliani
Sagitta* (5,153 tons; Italian)—Captain Domenico Ingegneri
Rina Corrado* (5,180 tons; Italian)—Captain Guglielmo Schettini
Conte di Misurata* (5,014 tons; Italian tanker)—Captain Mario Penco

*Ships lost in this action.  Libeccio succumbed the following day to submarine attack while picking up survivors.

Sources:
1. The Battles of the Malta Striking Forces by P. Smith & E. Walker
2. The Naval War in the Mediterranean 1940-1943 by J. Green & A. Massignani
3. Chronology of the War at Sea 1939-1945 by J. Rohwer & G. Hummelchen
4. The Italian Navy in WWII by A. Bragadin.