Maria Ivanovna is a fictional character from the short story "The Complaints Book" by Anton Chekhov. She is depicted as a middle-aged woman who works as a clerk in a government office. Maria is characterized by her diligent work ethic and her struggles with the bureaucratic system. In the story, Maria faces various challenges, including dealing with complaints from the public and navigating the complexities of her job. Her experiences reflect the broader themes of frustration and the often tedious nature of government work, highlighting the human side of those who serve in such roles.