Donald Keith may refer to:

• Donald Keith (author), a pseudonym for authors Donald and Keith Monroe
• Donald Keith (actor) (1903–1969), American silent film actor
• Donald R. Keith (1927–2004), American Army general

• Muck diving
• Mucke
• Muckefuck
• Mucker
• Muckers
• Muck (gambling)
• Muckhart
• Muckie
• Mucking
• Mucking In
• Mucking Marshes Landfill
• Muckish
• Muckish Mountain
• Muckle Flugga lighthouse
• Muckleford, Dorset
• Muckleford railway station
• Muckle Green Holm
• Muckle Holm
• Muckleshoot Indian Reservation
• Muckleshoot Indian Tribe of the Muckleshoot Reservation, Washington
• Mucklewain
• Muckle-Wells Syndrome
• Muckle wells syndrome
• Muckle–Wells syndrome
• Muckluck