Thomas Pynchon is a/an

Thomas Pynchon is an American novelist because he was born and raised in the United States and his works primarily focus on American themes and culture. He is known for his complex and postmodern writing style, often incorporating elements of history, science, and conspiracy theories into his novels. Pynchon's most famous works, such as "Gravity's Rainbow" and "The Crying of Lot 49," have had a significant impact on American literature and have solidified his reputation as one of the most important American novelists of the 20th century.