Lug or LUG may refer to:
Places Bosnia and Herzegovina Lug (Bugojno), a village Lug (Derventa), a suburb in Bosanska Posavina Lug, Jablanica, a village Lug (Kiseljak), a village Lug, Prozor, a village Lug, Tomislavgrad, a village
Croatia Lug, Bilje, a settlement in Croatian Baranja Lug, Karlovac County, a village Lug Zabočki, a village near Zabok Lug Samoborski, a village near Samobor Crni Lug, Croatia, a village near Delnice Čađavički Lug, a village near Čađavica Mali Lug, a village near Čabar Poljanski Lug, a village near Vrbovec
Ireland Lug, a townland in Durrow, County Offaly, barony of Ballycowan Lugnaquilla, a mountain often abbreviated as Lug
Serbia Lug (Bajina Bašta), a village Lug (Beočin), a village
Elsewhere Lug, Germany, a municipality in Südwestpfalz district, Rhineland-Palatinate Ług, Łódź Voivodeship, a village in Poland
Handles or connectors Lug (electrical connector), a bolt on an enclosure tied to an electric potential within the enclosure, supporting the connection of a cable A protrusion used to carry or attach an object: Lug (hinge), a protuberance of a hinge, featuring a hole for the axis of the hinge Lug (knob), handles are a kind of flattened knob attached to the side of pottery Locking lug, a protrusion on a firearm's bolt head that help securing it into the receiver or barrel Lug, a protrusion from the case of a wristwatch to which the strap or bracelet attaches, usually by means of spring bars that bridge pairs of lugs at the upper and lower sides of a watch's case Bayonet lug, a metal mount for a long gun that either locks a bayonet onto the weapon or provides a base for the bayonet to rest against Lug, part of a drum used in conjunction with tension rods and counter hoops to tension the drum head in relation to the shell Lug nut, a fastener, specifically a nut, used to secure a wheel on a vehicle
Businesses Last Unicorn Games, a defunct game publisher Level Up! Games, a Philippine video game studio
Organizations LEGO users group, a hobbyist organization group focusing on Lego construction toys Linux user group, a hobbyist organization providing support for Linux users
Transportation Lug (bicycle part), steel tubing and sockets of a bicycle Lug or grouser, the portion of the tread design in a tire that contacts the road surface Lug sail, a four sided sail bent to a yard Lugano Airport, IATA Airport Code LUG, a regional airport located west of the Swiss city of Lugano Lugging, damage-prone mode of operation in internal combustion engines
Other uses Lug (unit), a unit of measure for linear distance equal to a rod or of a statute mile Lug, or Lugus, Celtic god in ancient European culture, and many place names Lug or Lugh, an ancient god in Irish mythology Law of universal gravitation, Isaac Newton's equations for gravity Lesbian until graduation, slang term