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.
Unforgettable said she will focus on driving profitable growth across direct and travel trade channels, strengthening brand positioning, and increasing demand for the company’s luxury, tailor-made travel experiences.
She will take up her role on 12 October. “Erin brings an exceptional combination of luxury travel expertise, commercial insight and experience across both direct and trade channels," said Carter.
"Her proven ability to position specialist brands, inspire high-value customers and turn strong storytelling into bookings will be invaluable as we continue to grow our brands internationally.
"We are delighted to welcome her to the executive team and look forward to working together to introduce more travellers to the personalised experiences we offer.”
Johnson added: “I’m excited to join Unforgettable Travel Company at such an important stage in its growth.
"The business has a compelling proposition built around specialist expertise, personal service and the human touch, and I’m looking forward to bringing my experience across brand, direct and trade marketing to help strengthen demand and support the next phase of growth.”
Johnson spent more than five years as Marketing Director for Travelopia’s tailor-made division, overseeing Sovereign Luxury Travel, Citalia Holidays and American Holidays, and three years at Silversea Cruises as Marketing Director for UK, Ireland, Middle East and Africa.