The appointment comes as part of the company’s new commercial strategy to support the rapid growth and expansion.
Assem will oversee the portfolio of 11 brands, 42 hotels with 14,000 keys in addition to 10 hotels are due to open in 2019 and 35 hotels in the pipeline across the region.
Assem, who holds a degree in law and carries professional qualifications in marketing, is currently a member of the Chartered Institute of Marketing (MCIM).
He has more than 11 years of marketing experience, leading marketing and communications in the world's most renowned global hospitality brands. They include the Kempinski Hotels, Global Hotel Alliance, Starwood Hotels & Resorts, Marriott International and Hilton Hotels & Resorts.
Assem will be focusing on driving Millennium Hotels & Resorts brand equity and developing the marketing and communications strategies to reinforce the positioning of the eleven brands.
Kevork Deldelian, COO of Millennium Hotels & Resorts Middle East and Africa, said: "Haitham brings a wealth of experience and skills in developing successful marketing and communication strategies. It is my pleasure to announce his appointment, and the team looks forward to working with him to complement the rapid growth of the company and propel the Millennium brand to new heights of success."
Commenting on his appointment, Assem said: "I look forward to contributing to the growth of the company with innovative marketing strategies that will strengthen its position as one of the fastest-growing hotel management companies in the Middle East and Africa."
Millennium Hotels & Resorts Middle East & Africa operates 42 hotels with almost 14,000 rooms in addition to 10 hotels that are due to open in 2019 and 35 hotels in the pipeline.