Interstate 27
| Marshall Formby Memorial Highway | ||||
| I-27 highlighted in red | ||||
| Route information | ||||
| Maintained by TxDOT | ||||
| Length | 128.332 mi (206.530 km) | |||
| Existed | 1969–present | |||
| NHS | Entire route | |||
| Major junctions | ||||
| South end | US 87 in Lubbock | |||
| North end | I-40 / US 60 / US 87 / US 287 in Amarillo | |||
| Location | ||||
| Country | United States | |||
| State | Texas | |||
| Counties | Lubbock, Hale, Swisher, Randall, Potter | |||
| Highway system | ||||
| 
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Interstate 27 (I-27) is an Interstate Highway, entirely in the US state of Texas, running north from Lubbock to I-40 in Amarillo. These two cities are the only control cities on I-27; other cities and towns served by I-27 include (from south to north) New Deal, Abernathy, Hale Center, Plainview, Kress, Tulia, Happy, and Canyon. In Amarillo, I-27 is commonly known as the Canyon Expressway (or Canyon E-Way), although it is also called Canyon Drive on its access roads. I-27 was officially designated the Marshall Formby Memorial Highway after former attorney and State Senator Marshall Formby in 2005. The entire length of I-27 replaced US Highway 87 (US 87) for traffic. An extension of I-27 north to Raton, New Mexico, and south to Laredo, Texas, was approved in 2022.