William McGregor Paxton was an American painter and instructor who embraced the Boston School paradigm and was a co-founder of The Guild of Boston Artists. He taught briefly while a student at Cowles Art School and at the Museum of Fine Arts School in Boston.
Paxton is known for his portraits, including those of two presidents—Grover Cleveland and Calvin Coolidge—and interior scenes with women, including his wife. His works are in many museums in the United States.