Thread could mean:

• A kind of thin yarn, thin fibers spun together, for sewing
• Screw thread, a ridge running in a spiral down the length of a screw
• Threaded discussion, a group of messages to a newsgroup, mailing list or Internet forum on a single topic
• Thread (computer science), a sequence of instructions which may execute in parallel with other threads
• Threads, a 1984 BBC docudrama concerning the after-effects of a nuclear attack on Sheffield
• Thread, a destructive mindless alien spore in the Dragonriders of Pern series of science fiction novels
• "Threads", a Season 8 Stargate SG-1 episode
• Thread (unit of measurement), a cotton yarn measurement, equal to 54 inches
• Thread, a 1999 album by Wideawake
• Thread, a sugar stage in candy cookery
• Thread (business technology), a connection made to publicly record the quality of a business transaction
• Threads, an social media app that is owned by Meta Platforms