Nestor Patou is a fictional character from the 1954 film "The Last Time I Saw Paris," directed by Richard Brooks. He is portrayed by actor Van Johnson and is depicted as an American writer living in post-World War II Paris. The character navigates themes of love, loss, and the impact of war on personal relationships. In the film, Nestor's life becomes intertwined with that of Helen and Charles, showcasing the complexities of romance and the challenges faced by expatriates. The story reflects the cultural atmosphere of Paris during that era, highlighting the struggles of individuals seeking meaning in a changing world.