Swordtail may refer to:
- Green swordtail (Xiphophorus hellerii), ranging from Mexico to Honduras
- Chiapas swordtail (Xiphophorus alvarezi), occurring in Mexico and Guatemala
- Marbled swordtail (Xiphophorus meyeri), an endangered species endemic to Mexico
- Yellow swordtail (Xiphophorus clemenciae), endemic to Mexico
- Sword-tail cricket, a subfamily of crickets with the scientific name Trigonidiinae
- Sword-tail newt, a species of newt found only on the Ryukyu Archipelago
- Graphium (butterfly), a genus of swallowtail butterflies whose members are known as swordtails
|This disambiguation page lists articles associated with the title Swordtail.
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