Johnson joins Unforgettable from Specialist Holidays Group, where she was Chief Marketing Officer.
She will also join the specialist operator's executive team, reporting to Graham Carter, Co-Founder of the business.
Johnson, who previously worked for Silversea for more than three years, will lead the company’s global marketing strategy across all of the group's brands, including Unforgettable Travel, Unforgettable Croatia, Unforgettable Greece and Cruise Croatia.