As a President, Singh will be responsible for sales, marketing and business development for the company, Lemon Tree Hotel Company said in a statement.
He will report to the company's CMD Patu Keswani, it added.
The Lemon Tree Group, operates three brands - Lemon Tree Premier (upscale), Lemon Tree Hotels (midscale) & Red Fox Hotels (economy).
At present, it owns and operates 29 hotels in 18 cities aggregating over 3,200 rooms with 3,500 employees.