The book “Soil Engineering: An Introduction” has been prepared to present the subject matter in such a way that the student will not only find it useful from examination point of view but also will be able to apprehendfully the basic principles of Soil Mechanics. The subject Soil Mechanics/Geotechnical Engineering is the compulsory core subject at the undergraduate level.The book will be of immense help for the U.G/Diploma/AMIE students. The book deals with the fundamental principles of Soil Mechanics, formation of soils, the classification of soils, stress distribution, compaction, consolidation and strength characteristics besides soil exploration and soil modification/stabilisation, bearing capacity & slope stability etc.