John Hassall was a British artist and illustrator, best known for his work in the early 20th century. He gained popularity for his vibrant and engaging posters, particularly those promoting travel and leisure. His style often featured bold colors and whimsical designs, making his artwork appealing to a wide audience. In addition to his poster work, Hassall illustrated books and magazines, contributing to the visual culture of his time. He was associated with the London School of Illustration and played a significant role in the development of commercial art in Britain. His legacy continues to influence contemporary illustrators and designers.