Model 1 may refer to:
- Boeing Model 1, a United States single-engine biplane seaplane aircraft
- Breese-Dallas Model 1, a prototype single engine airliner that rapidly changed hands throughout the 1930s.
- Austin Model 1, a semi-empirical method for the quantum calculation of molecular electronic structure in computational chemistry
- JSP model 1 architecture, a complex design pattern used in the design of Java Web applications which separates the display of content from the logic used to obtain and manipulate the content
- Sega Model 1, an arcade system board released by Sega in 1992
- Smith & Wesson Model 1, an American revolver produced from 1876 through 1911
disambiguation page lists articles associated with the title Model 1.
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