MTD

• Maximum tolerated dose, in drug development
• Muscle tension dysphonia, hyperfunctional musculature causing a hoarse voice

• Makkal Tamil Desam Katchi (People's Tamil Land Party), a political party in Tamil Nadu, India
• Metal Trades Department of the AFL-CIO
• Michael Tobias Design, a manufacturer of electric bass guitars
• Movimiento de Trabajadores Desempleados, a type of unemployed worker's organization in Argentina
• MTD Products, an American manufacturer of outdoor power equipment for the mass market
• MTD, a German developer and manufacturer of line, bar and hyperspectral LED luminaires for industry

• Memory technology device, a type of device file in Linux for interacting with flash memory
• Metadynamics, a computer simulation method in computational physics, chemistry and biology
• MTD (mobile network), a former manual mobile network in Sweden, Norway and Denmark

• Making Tax Digital a UK Government initiative of HMRC
• A mass transit district, such as the Champaign-Urbana Mass Transit District
• Month-To-Date, a time period used in business and accounting
• Moralistic therapeutic deism
• MTD(f), a minimax search algorithm

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