The comms firm is expected to carry out a national and regional campaign for the French restaurant chain, which currently owns 13 eateries across the UK.
With three new restaurant openings planned over the next two years in Newport, Birmingham and Swansea and more in the pipeline for 2017, Cartwright will also support Le Bistrot Pierre’s launch events.
Jennie Holland, director at Cartwright, said: "Le Bistrot Pierre is a hugely successful group that launched in Nottingham 21 years ago – and has achieved great things UK wide.
"As a Nottingham-based agency, it is great to work with such a thriving restaurant group whose roots are in the city. We are looking forward to creating a buzz around Le Bistrot Pierre regionally – and nationally."