Blue star or bluestar may refer to: *

O-type star An O-type star is a hot, blue star of spectral type O in the Yerkes classification system employed by astronomers. They have surface temperatures in excess of 30,000 kelvins (K). Stars of this type have strong absorption lines of ionised h ...

(a.k.a. blue star), a stellar classification

Animals

* ''

Linckia laevigata ''Linckia laevigata'' (sometimes called the "blue ''Linckia''" or blue star) is a species of sea star in the shallow waters of tropical Indo-Pacific. Description and characteristics The variation ("polymorphism", in this case, a "color morph" ...

'', a sea star from the Indian and West Pacific Oceans * '' Phataria unifascialis'', a sea star from the East Pacific

Businesses

Blue Star (company) Blue Star Ltd is an Indian multinational home appliances company, headquartered in Mumbai. It specializes in air conditioning, commercial refrigeration and MEP (mechanical, electrical, plumbing and firefighting). It is the country's second l ...

, an Indian Air conditioning company * Blue Star Donuts, an American chain of gourmet donut shops *

Blue Star Ferries Blue Star Maritime S.A., operating under the brand name Blue Star Ferries, is a Greece-based company founded in 1993 which provides ferry services between the Greek mainland and the Aegean Islands. Blue Star Ferries is the biggest ferry company ...

, a Greek ferry company * Blue Star Infotech, Indian company *

Blue Star Line The Blue Star Line was a Merchant Navy (United Kingdom), British passenger and cargo shipping company formed in 1911, being in operation until 1998. Formation Blue Star Line was formed as an initiative by the Vestey Brothers, a Liverpool-ba ...

, a former British shipping company * Blue Star Productions, a publishing imprint and a division of Book World, Inc *

Bluestar (bus company) Solent Blue Line Limited, trading under the name Bluestar, is a bus operator providing services in Southampton and the surrounding areas of Hampshire. It is a subsidiary of the Go South Coast sector of the Go-Ahead Group. History Origins In ...

, based in Southampton, England * Blue star (Indonesian bus company), based in

Salatiga Salatiga () is a Cities of Indonesia, city in Central Java province, Indonesia. It covers an area of and had a population of 192,322 at the 2020 Indonesian census, 2020 Census;Badan Pusat Statistik, Jakarta, 2021. the official estimate as at m ...

Central Java Central Java (, ) is a Provinces of Indonesia, province of Indonesia, located in the middle of the island of Java. Its administrative capital is Semarang. It is bordered by West Java in the west, the Indian Ocean and the Special Region of Yogya ...

Indonesia Indonesia, officially the Republic of Indonesia, is a country in Southeast Asia and Oceania, between the Indian Ocean, Indian and Pacific Ocean, Pacific oceans. Comprising over List of islands of Indonesia, 17,000 islands, including Sumatra, ...

* Bluestar Company, a predecessor of

ChemChina China National Chemical Corporation, commonly known as ChemChina, is a Chinese state-owned chemical company in the product segments of agrochemicals, rubber products, chemical materials and specialty chemicals, industrial equipment, and petroc ...

Military

Operation Blue Star Operation Blue Star was a military operation by the Indian Armed Forces conducted between 1 and 10 June 1984 to remove Jarnail Singh Bhindranwale and other Sikh militants from the Golden Temple (Harmandir Sahib), a holy site of Sikhism, and i ...

, a 1984 Indian military operation * Blue stars used on

service flag A service flag or service banner is a banner that family members of those serving in the United States Armed Forces can display. The flag or banner is officially defined as a white field with a red border, with a blue star for each family member ...

s denote a United States service member fighting in a war **

Blue Star Memorial Highway Blue Star Memorial Highways are highways in the United States that are marked to pay tribute to the U.S. armed forces. The National Council of State Garden Clubs, now known as National Garden Clubs, National Garden Clubs, Inc., started the progra ...

, a system of highway markers honoring veterans **

Blue Star Mothers Club Blue is one of the three primary colours in the RYB colour model (traditional colour theory), as well as in the RGB (additive) colour model. It lies between violet and cyan on the spectrum of visible light. The term ''blue'' generally descr ...

, a non-profit military support group

Music

* "Blue Star" (song), first recorded 1955 * ''Blue Star'', an album by

Levinhurst Levinhurst is an English electronic band formed by keyboardist/drummer Lol Tolhurst, a founding member of the Cure, and his wife Cindy Levinson on vocals. The band's name is a portmanteau of their surnames. To date, Levinhurst has released thre ...

Plants

* ''

Amsonia ''Amsonia'' is a genus of flowering plants in the Apocynum, dogbane family, Apocynaceae, first described as a genus in 1788. It is native primarily to North America with one species in East Asia and another in the eastern Mediterranean. It was ...

'', plant species also named "bluestar" **

Hubricht's Bluestar ''Amsonia hubrichtii'', commonly known as Hubricht's bluestar, Arkansas bluestar, or thread-leaf bluestar, is a North American species of perennial flowering plant in the Apocynaceae (dogbane) family, first described in 1943. It is native to Okla ...

(''Amsonia hubrichtii''), plant * ''

Isotoma axillaris ''Isotoma axillaris'', commonly known as rock isotome or showy isotome, is a small herbaceous perennial in the family Campanulaceae. It usually has blue or mauve star-shaped flowers from September to May. It may also be called blue star, star flo ...

Others

* ''The Blue Star'' (novel), a 1952 fantasy novel by Fletcher Pratt *

The Blue Star (film) ''The Blue Star'' () is a 2023 drama film written and directed by Javier Macipe (in his directorial debut feature) inspired by the life of Aragonese musician Mauricio Aznar which stars Pepe Lorente. Plot Set in the 1990s, the plot follows th ...

, a 2023 Spanish-Argentine drama film *

Newcastle Blue Star F.C. Newcastle Blue Star F.C. is a association football, football club based in Newcastle upon Tyne, England. It was established in 1930 and joined the Wearside League in 1973. In 1978, the club won the FA Vase. They won promotion to the Northern Prem ...

, English association football team * Blue star, the logo of

Newcastle Brown Ale Newcastle Brown Ale is a brown ale, originally brewed in Newcastle upon Tyne, England. It was launched in 1927 by Colonel Jim Porter after three years of development. The 1960 merger of Newcastle Breweries with Scottish Brewers afforded the bee ...

BlueStar PR BlueStar (formerly "BlueStar PR"), "The Jewish Ink Tank", is a San Francisco-based nonprofit organization which produces "''visual media that strengthens existing efforts to gain popular support and interest for Israel and Judaism.''" Blue Star ...

, Jewish political organization *

Tesla BlueStar The Tesla Model 3 is a battery electric powered mid-size sedan with a fastback body style built by Tesla, Inc., introduced in 2017. The vehicle is marketed as being more affordable to more people than previous models made by Tesla. The Model ...

, code name for the Tesla Model 3 electric car *

Blue Star Wicca Blue Star Wicca is one of a number of Wiccan traditions, and was created in the United States in the 1970s based loosely on the Gardnerian and Alexandrian traditions. Origins and history The "Coven of the Blue Star" and the traditions was es ...

, a sect of traditionalist witches * Blue Star, a nickname for the United States

business band In the United States, the business band is the colloquial name used by radio users who utilize and scanner hobbyists who listen to the Federal Communications Commission (FCC) Industrial/Business pool Frequency, frequencies. The regulations listi ...

frequency of 467.925 MHz * Blue Star (SLV), satellite launcher *

Blue star tattoo legend The blue star tattoo legend is an urban legend which states that a temporary lick-and-stick tattoo soaked in Lysergic acid diethylamide, LSD and made in the form of a blue star, or of popular children's cartoon characters, is being distributed to ...

* Blue Star, a type of

Multiple working On the rail network in Great Britain, multiple working is where two or more traction units (locomotives, diesel multiple units or electric multiple units) are coupled together in such a way that they are all under the control of one driver ...