| Aldo Ballarin | |
| Birth Date: | 1922 1, df=y |
| Birth Place: | Chioggia, Italy |
| Death Place: | Superga, Italy |
| Position: | Defender |
| Youthyears1: | 1938–1939 |
| Youthclubs1: | Adriese |
| Years1: | 1939–1941 |
| Years2: | 1941–1943 |
| Years3: | 1943–1945 |
| Years4: | 1945–1949 |
| Clubs4: | Torino |
| Caps1: | 36 |
| Caps2: | 57 |
| Caps3: | 21 |
| Caps4: | 148 |
| Goals1: | 2 |
| Goals2: | 1 |
| Goals3: | 9 |
| Goals4: | 4 |
| Totalcaps: | 262 |
| Totalgoals: | 16 |
| Nationalyears1: | 1945–1949 |
| Nationalteam1: | Italy |
| Nationalcaps1: | 9 |
| Nationalgoals1: | 0 |
Aldo Ballarin (pronounced as /it/; 10 January 1922 – 4 May 1949) was an Italian footballer who played as a defender.
Ballarin played for five seasons (166 games, three goals) in Serie A for U.S. Triestina Calcio and Torino. With Torino, he won four Serie A titles.
He made his debut for the Italy national football team on 11 November 1945 in a game against Switzerland.
Aldo's younger brothers Dino Ballarin and Sergio Ballarin also played football professionally. To distinguish them, Aldo was referred to as Ballarin I, Dino as Ballarin II and Sergio as Ballarin III.
Ballarin died with his brother Dino and most of the Grande Torino team in the Superga air disaster. The stadium in his hometown, in which A.C. Chioggia Sottomarina plays, was renamed in their honour.