'The word euthanasia has connotations that can sometimes work against us and divert attention from the real issue of patient choice,' said Slattery.
The name change will come into effect on 23 January. Chief executive Deborah Annetts is to appear on BBC Radio 4's Start the Week on the day to highlight the rebrand and explain the reasons behind it.
She will also be the subject of a profile interview in The Guardian later this month.
Research into doctors' attitudes to end-of-life decisions will be released in February to further promote the rebrand, Slattery added.