Geology Map - Geology, oil, gas fields and geological provinces by USGS. - http://pubs.usgs.gov/of/1997/ofr-97-470/OF97-470C/asiaGmap.html
Mappls - Offer village, city, and tourist maps. - http://www.mappls.com/
Maps of India - University of Virginia Library - A collection of early and historical maps, arranged as a slide show. - http://www.lib.virginia.edu/area-studies/SouthAsia/maps/indiamap.html
MapTell - Provides a collection of state and district maps, and includes zoomable road maps of the country. - http://www.maptell.com/maps/webmap/webmap.htm
MapMyIndia - Interactive maps of the country, with detailed street level maps of some major cities. - http://www.mapmyindia.com
TourMyIndia - Maps - Collection of outline maps of the major cities. - http://www.tourmyindia.com/map/
Census Maps - Year 2001 census results through maps. - http://www.censusindia.net/maps/index.html
TERI Maps - Maps of forest vegetation, soil degradetion, energy units, major industries, river water quality. - http://www.edugreen.teri.res.in/explore/maps/maps.htm
Geological Map - Geological map of India from Geological Survey of India. - http://www.gsi.gov.in/geolmap.htm
University of Texas Libraries - India Maps - Country, city and thematic maps from the Perry-CastaƱeda Library Map Collection, along with links to maps on other web sites. - http://www.lib.utexas.edu/maps/india.html
Geographic.org: Maps of India - Contains a few maps of India made available for use on personal websites. - http://www.geographic.org/maps/india_maps.html
Maps of India - Interactive maps including air, railway network, highways, and distance charts, pin code search engine and tourist maps. - http://www.mapsofindia.com/