Cat's claw or cat's claws (also uña de gato or unha de gato in Spanish or Portuguese) is a common name for several plants:

• Acacia greggii, a tree species native to the southwestern United States and northern Mexico
• Acacia plumosa, a plant species native to Brazil
• Carpobrotus edulis, or uña de gato (Spanish: "cat's claw"), a plant species in the family Aizoaceae
• Dolichandra unguis-cati, or cat's claw creeper, a Central American climbing vine of the family Bignoniaceae
• Grevillea alpina, a shrub species native to Australia
• Martynia annua, a plant species endemic to Brazil
• Mimosa nuttallii (formerly Schrankia nuttalli), a plant native to the Midwestern United States
• Uncaria guianensis, a plant species found in Guyana and used in traditional medicine
• Uncaria rhynchophylla, a plant species used in traditional Chinese medicine
• Uncaria tomentosa, a plant species found in the tropical jungles of South and Central America and used in traditional medicine