TTM may refer to:
- Traditional Tibetan medicine
- Thailand Tobacco Monopoly, a state enterprise in Thailand involved in the manufacturing and distribution of tobacco products
- TTM, Tata Motors's stock symbol on the New York Stock Exchange
- Time to market, the length of time it takes from a product being conceived to its being available for sale
- Transtheoretical model of change, a concept in health psychology
- Trailing twelve months, the most-recent year of financial results
- The Three Musketeers, the novel by Alexandre Dumas and also the movie
- The Third Manifesto, Christopher J. Date's and Hugh Darwen's proposal for future database management systems