Ettore Caffaratti, Giulio Cacciandra, Alessandro Alvisi and Carlo Asinari — Equestrian, Team jumping
Aquatics
Diving
A single diver represented Italy in 1920. It was the nation's third appearance in the sport. De Sanctis was unable to advance past the first round in either of his two events. ; Men Ranks given are within the semifinal group.
Swimming
Four swimmers, all men, represented Italy in 1920. It was the nation's fourth appearance in the sport. None of the individual swimmers advanced to the finals, though the relay did advance before finishing fifth in the final. Ranks given are within the heat. ; Men
Water polo
Italy competed in the Olympic water polo tournament for the first time in 1920. The Bergvall System was in use at the time. Italy forfeited its round of 16 match with Spain, then was defeated by Greece in the bronze medal tournament.
24 athletes represented Italy in 1920. It was the nation's fourth appearance in athletics. Frigerio gave the nation its first gold medals in the sport by winning both of the racewalking competitions. Italy's long-distance successes also included a bronze in the marathon and a bronze in the steeplechase. Overall, the nation placed fourth on the athletics medals leaderboard. Ranks given are within the heat.
Boxing
Five boxers represented Italy at the 1920 Games. It was the nation's debut in boxing. Garzena had the best performance for Italy, taking all three of the nation's wins on his way to a bronze medal.
Cycling
Twelve cyclists represented Italy in 1920. It was the nation's third appearance in the sport. Italy took its first Olympic cycling medal when its pursuit team won the gold. Italy also had three cyclists place in the top eight of the 50 kilometres event, though none was able to secure a medal.
Road cycling
Track cycling
Ranks given are within the heat.
Equestrian
Ten equestrians represented Italy in 1920. It was the nation's second appearance in the sport. The Italian equestrians were fairly successful, winning five medals to take third place on the equestrian leader board for the Games. Italians took the top two spots in the individual jumping competition, as well as a bronze in the individual eventing. The nation also earned a medal in each of the two team events in which it participated, a silver in the eventing and a bronze in jumping.
Fencing
Nineteen fencers represented Italy in 1920. It was the nation's fourth appearance in the sport. The Italian fencers took five of the six gold medals; the individual épée was the only event not won by an Italian. Nedo Nadi took the individual gold medals in the foil and sabre; both he and his brother Aldo were on all three of the gold-medal teams. Aldo Nadi also took a silver medal in the individual sabre. Ranks given are within the group.
Football
Italy competed in the Olympic football tournament for the second time. The team beat Egypt in the first round before falling to France in the quarterfinals. In the tournament for second place, the Italians beat Norway before losing to Spain in the consolation semis. ; Team Roster
Piero Campelli
Giovanni Giacone
Antonio Bruna
Renzo de Vecchi
Virginio Rosetta
Gracco de Nardo
Ettore Reynaudi
Mario Meneghetti
Giuseppe Parodi
Luigi Burlando
Rinaldo Roggero
Giustiniano Marucco
Pio Ferraris
Giuseppe Forlivesi
Cesare Lovati
Enrico Sardi
Adolfo Baloncieri
Emilio Badini
Guglielmo Brezzi
Aristodemo Santamaria
Adevildo De Marchi
; First round ; Quarterfinals ; Consolation first round ; Consolation semifinals ;Final rank: 5th
Gymnastics
Twenty-seven gymnasts represented Italy in 1920. It was the nation's fourth appearance in the sport. The Italians took gold medals in both of the events in which they competed, with Zampori taking the men's individual all-around and leading the Italians to a team gold. Italy did not compete in the free system or Swedish system team events.
Artistic gymnastics
Modern pentathlon
A single pentathlete represented Italy in 1920. It was the nation's debut in the sport. A point-for-place system was used, with the lowest total score winning.
Rowing
Six rowers represented Italy in 1920. It was the nation's third appearance in the sport. Italian rowers reached the finals for the first time, winning the nation's first two Olympic rowing medals: a gold in the coxed pairs and a silver in the double sculls. Ranks given are within the heat.
Shooting
Ten shooters represented Italy in 1920. It was the nation's second appearance in the sport, and the first since 1896. Greece took a silver medal in the team military pistol, its first medal in shooting since 1896. Italy's best result was a fourth-place finish in the team standing military rifle.
Tennis
Four tennis players, three men and one woman, competed for Italy in 1920. It was the nation's debut in the sport. Balbi and Colombo reached the quarterfinals in the men's doubles, the best result for Italy that year.
Tug of war
Italy competed in the Olympic tug of war tournament for the first time in 1920, the final appearance of the sport in the Olympics. The Bergvall System was used in 1920. Italy lost its first match in the semifinals to the Netherlands. Because the Dutch went on to win the silver medal, Italy received an opportunity to contest the bronze. In the bronze medal semifinals, the Italians lost again, this time to the United States, to finish fifth and last in the tournament. All matches were best-of-three pulls. ; Semifinals ; Bronze medal semifinals ; Final rank: 5th
Weightlifting
Five weightlifters, one in each weight class, represented Italy in 1920. It was the nation's debut in the sport. No Italian weightlifter placed worse than sixth, with two winning medals and two others just missing with fourth-place finishes.
Wrestling
Eight wrestlers, all in the Greco-Roman style, competed for Italy in 1920. It was the nation's third appearance in the sport. None of the Italian wrestlers advanced past the quarterfinals, or qualified for the silver or bronze rounds.