Squill is a common name for several lily-like plants and may refer to:
Drimia maritima, medicinal plant native to the Mediterranean, formerly classified as Scilla maritima Scilla, a genus of plants cultivated for their ornamental flowers, native to Europe and Asia Puschkinia scilloides, a bulbous perennial resembling Scilla also cultivated for its ornamental flowers
It may also refer to SQL (Structured Query Language), used to manage databases.