William Maxwell, 3rd Baronet
William Maxwell, 3rd Baronet is the name of the following people:
- William Maxwell, 3rd Baronet (of Calderwood) († 1716), Scottish nobleman
- William Maxwell, 3rd Baronet (of Monreith) (around 1715–1771), Scottish nobleman
- William Maxwell, 3rd Baronet (of Springkell) (1739-1804), Scottish nobleman
- William Maxwell, 3rd Baronet (of Cardoness) (1809–1886), Scottish nobleman
