The naming of weapons in Middle-earth is the giving of names to swords and other powerful weapons in J. R. R. Tolkien's legendarium. He derived the naming of weapons from his knowledge of Medieval times; the practice is found in Norse mythology and in the Old English poem Beowulf. Among the many weapons named by Tolkien are Orcrist and Glamdring in The Hobbit, and Narsil / Andúril in The Lord of the Rings. Such weapons carry powerful symbolism, embodying the identity and ancestry of their owners.
There are multiple parallels between Tolkien's usage of named weapons in his Middle-earth writings, and the Medieval epics. These include their inheritance as heirlooms, sometimes royal; their rediscovery in ancient treasure-hoards; their being broken and reforged; their adornment with runic inscriptions; and their interlinking with the lives of their owners.