The 1923 Giro d'Italia of cycling was the 11th edition to take place. It was held from 23 May to 10 June 1923, with 10 stages stretching over 3,202 km and was won by Costante Girardengo of Italy. Attrition reduced the 97 starters to just 38 finishers.[1]
This year saw the debutant Ottavio Bottecchia finish in 5th place overall, and the leading 'isolate' (rider without a team). Bottecchia caught the attention of French rider Henri Pélissier, who instigated his glorious Tour de France career.
| Stage | From | to | km | Stage Winner | Leader of General Classification |
| 1ª | Milano | Torino | 328 | ||
| 2ª | Torino | Genova | 312 | ||
| 3ª | Genova | Florence | 265 | ||
| 4ª | Florence | Rome | 288 | ||
| 5ª | Rome | Naples | 281 | ||
| 6ª | Naples | Chieti | 283 | ||
| 7ª | Chieti | Bologna | 383 | ||
| 8ª | Bologna | Trieste | 362 | ||
| 9ª | Trieste | Mantova | 357 | ||
| 10ª | Mantova | Milano | 341 |
| Classifica generale | |||||||||||||||||||||||||||||||
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