LSI
The abbreviation LSI stands for:
- State Office for Security in Information Technology - a state authority for IT security in Bavaria
- Landesspracheninstitut - a further education institution in Bochum
- Langelier saturation index - a value for estimating the water quality
- Large Scale Integration - a degree of integration in semiconductor technology
- LaserSoft Imaging - a company that develops scanner and imaging software
- Laser Sheet Imaging - a technique of geometry inspection
- Latent Semantic Indexing - a technique of information retrieval for generalized searches on documents
- Lessico dialettale della Svizzera italiana, a short version of the Vocabolario dei dialetti della Svizzera italiana
- Lettre signature - a former name for domestic registered letters from the Swiss Post
- Lëvizja Socialiste për Integrim - a social democratic party in Albania
- Liberal student initiative - a university policy group, for example in Münster and Bielefeld
- Lorenz von Stein Institute - a research institute, see Lorenz von Stein Institute for Administrative Sciences
- LSI Corporation - a United States company
- the IATA airport code of Sumburgh Airport
- Regional school inspector - see education system in Austria # School supervision
