| Santa Maria la Longa | |
| Official Name: | Comune di Santa Maria la Longa |
| Pushpin Label Position: | left |
| Coordinates: | 45.9333°N 31°W |
| Region: | Friuli-Venezia Giulia |
| Province: | Udine (UD) |
| Frazioni: | Mereto di Capitolo, Ronchiettis, Santo Stefano Udinese, Tissano |
| Mayor: | Igor Treleani |
| Area Total Km2: | 19.6 |
| Population Total: | 2338 |
| Population As Of: | 30 April 2017[1] |
| Population Demonym: | Santamarialonghesi |
| Elevation M: | 38 |
| Saint: | St. Mary |
| Day: | 15 August |
| Postal Code: | 33050 |
| Area Code: | 0432 |
Santa Maria la Longa (Friulian: Sante Marie la Lungje) is a Italian: [[comune]] (municipality) in the Regional decentralization entity of Udine in the Italian region of Friuli-Venezia Giulia, located about 50km (30miles) northwest of Trieste and about 15km (09miles) southeast of Udine.
Santa Maria la Longa borders the following municipalities: Bicinicco, Gonars, Palmanova, Pavia di Udine, Trivignano Udinese.