Delhi, being a national capital faces huge anthropogenic pressure since decades. Ecologically Delhi is nestled between two different types of topology, one is rugged Aravalli hill range and its typical scrub forest, another is the Yamuna River and its fertile alluvial flood plains. This type of topology makes many micro habitat zones in between these two large ecological landscapes. Delhi being a gardened island of greenery in a very extensive semi desert region on one part of Delhi to the semi-flowing River Yamuna on the other side permits an easy and discrete study of sub localities. The present compilation of butterfly fauna is a long term study since 2012 onwards, through various months’ long systematic surveys and review of the existing literature on butterfly of Delhi region. It reports total 115 species of butterfly from Delhi till date.