George Leslie Adkin (26 July 1888 – 21 May 1964) was a New Zealand farmer, geologist, archaeologist, ethnologist, photographer, tramper and environmentalist.

During his time as a boarding student Adkin developed an interest in collecting plants and rocks and also learnt to process his own photographs.

His enthusiasm for photography never faltered during his lifetime and his large collection of negatives form a visual diary of his life and activities.

He combined his interest in geology with tramping and explored the Tararua ranges making the first recorded crossing from Levin to Masterton.

He was an early critic of bush-felling on the uplands and recognised the threat of newly emergy earthmoving technology to both natural and archeological sites.