Yellowtail, yellow-tail, or Yellow Tail may refer to:
Yellowtail (fish), any of several species of fish Yellow-tail, a Eurasian moth species Yellowtail moth, a South American moth species Yellow Tail (wine), an Australian wine producer Yellow Tail Records, a record label Yellowtail cribo, a snake species
People with the surname Robert Yellowtail (1889–1988), Crow Nation leader Susie Walking Bear Yellowtail (1903–1981), Crow nurse Thomas Yellowtail (1903–1993), Crow sun dance chief and medicine man