- Polar Electro , a Finnish manufacturer of heart rate monitors
- Polar Air Cargo , a logistics company
- Polar (artist) , a Norwegian electronic music artist
- Empresas Polar , a brewery in Venezuela
- Polar Beverages , an independent soft drink bottling company based in Worcester, Massachusetts
- Polar Race , the first organised team Polar race to the Magnetic North Pole
- Polar Challenge , a team Polar race to the Magnetic North Pole
- Polar (satellite) , a satellite launched by NASA in 1996.
- The Polar Express , a 1985 children's book adapted as a feature film in 2004
- The Polar Express (film) , a 2004 film based upon the children's book of the same name
- Polar (album) , the second album by The High Water Marks
- Polar Studios , once one of the most famous recording studios in Scandinavia
- Polar Medal , a medal awarded by the Sovereign of the United Kingdom for exploration and scientific endeavour at the North or South Pole
- Polar Music , a Swedish record company founded in 1963
- Polar Music Prize , an international music prize founded 1989 awarded annually by the Royal Swedish Academy of Music
- Order Of The Polar Star (Swedish Nordstjärneorden), a Swedish Royal order of chivalry
- Polar Star (novel) , a 1989 crime novel by Martin Cruz Smith, set in the Soviet Union in the late 1980s
- POLAR II , a pedestrian test dummy created by Honda, used to study how pedestrians injuries in road traffic accidents
- Polar Wrocław , a Polish football club based in Wrocław, Poland
- Polarity In International Relations , a description of the distribution of power within the international system
- Geographical Pole , either of two fixed points on the surface of a spinning body or planet, at 90 degrees from the equator, based on the axis around which a body spins
- --- Polar Circle , a circle of latitude where the sun is above and below the horizon for 24 continuous hours at least once per year
- --- Polar Climate , the climate of the polar regions, characterized by a lack of warm summers
- --- Polar Region , the region within the polar circles, referred to as the Arctic and Antarctic
- Polar, Wisconsin , a town in Langlade County, Wisconsin, United States
- Chemical Polarity , a concept in chemistry which describes how equally bonding electrons are shared between atoms
- Intermediate Polar , a type of cataclysmic variable binary star system
- Polar (cataclysmic Variable) , a strongly magnetic cataclysmic variable star system
- Polar Body , a cell structure found inside an ovum, produced during oogenesis
- Polar Coordinate System , a coordinate system in which points are given by an angle and a distance from the pole, or central point equivalent to the origin in the Cartesian coordinate system
- Polar Curve (aviation) , a graph of the rate of sink versus the horizontal speed of an aircraft
- Polar Membrane , either 1) a lipid bilayer membrane displaying polarity or 2) a specialized region of the bacterial cell membrane associated with the flagella (usually located at the cell poles)
- Polar Set , in Functional Analysis , a set whose compact subsets have h-capacity 0 for all h > 0
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