Larsen & Toubro
| L&T office in Manapakkam, Chennai with core sector divisions | |
| Company type | Public | 
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| ISIN | INE018A01030 | 
| Industry | Conglomerate | 
| Founded | 7 February 1946 Bombay, Bombay Presidency, British India (present-day Mumbai, Maharashtra, India) | 
| Founders | |
| Headquarters | L&T House, Ballard Estate, Mumbai, Maharashtra, India | 
| Area served | Worldwide | 
| Key people | 
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| Products | 
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| Services | |
| Revenue | ₹259,859 crore (US$31 billion) (2025) | 
| ₹23,104 crore (US$2.7 billion) (2025) | |
| ₹17,687 crore (US$2.1 billion) (2025) | |
| Total assets | ₹379,524 crore (US$45 billion) (2025) | 
| Total equity | ₹115,404 crore (US$14 billion) (2025) | 
| Number of employees | 407,438 (including 348,094 workmen) (2024) | 
| Divisions | 
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| Subsidiaries | 
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| Website | www | 
Larsen & Toubro Limited, abbreviated as L&T, is an Indian multinational conglomerate, with interests in industrial technology, heavy industry, engineering, construction, manufacturing, power, information technology, defence and financial services. It is headquartered in Mumbai, Maharashtra.
L&T was founded in 1938 in Bombay by Danish engineers Henning Holck-Larsen and Søren Kristian Toubro.
As of 31 March 2022, the L&T Group comprises 93 subsidiaries, 5 associate companies, 27 joint ventures and 35 jointly held operations, operating across basic and heavy engineering, construction, realty, manufacturing of capital goods, information technology, and financial services.
On 1 October 2023, S N Subrahmanyan took charge as Chairman and Managing Director of L&T.