FI or fi may refer to:
Finland ( ( listen); Finnish: Suomi [suo̯mi] ( listen); Swedish: Finland [ˈfɪnland]), officially the Republic of Finland (Finnish: Suomen tasavalta, Swedish: Republiken Finland) is a sovereign state in Northern Europe.
Fish are the gill-bearing aquatic craniate animals that lack limbs with digits. They form a sister group to the tunicates, together forming the olfactores.
Mozilla Firefox (or simply Firefox) is a free and open-source web browser developed by Mozilla Foundation and its subsidiary, Mozilla Corporation.
Fiji ( ( listen) FEE-jee; Fijian: Viti [ˈβitʃi]; Fiji Hindi: फ़िजी), officially the Republic of Fiji (Fijian: Matanitu Tugalala o Viti; Fiji Hindi: फ़िजी गणराज्य), is an island country in Melanesia in the South Pacific Ocean about 1,100 nautical miles (2,000 km; 1,300 mi) northeast of New Zealand's North Island.
In mathematics, the Fibonacci numbers are the numbers in the following integer sequence, called the Fibonacci sequence, and characterized by the fact that every number after the first two is the sum of the two preceding ones:
Fidel Alejandro Castro Ruz (; American Spanish: [fiˈðel aleˈhandɾo ˈkastɾo ˈrus] ( listen); August 13, 1926 – November 25, 2016) was a Cuban politician and communist revolutionary who governed the Republic of Cuba as Prime Minister from 1959 to 1976 and then as President from 1976 to 2008. Politically a Marxist–Leninist and Cuban nationalist, Castro also served as the First Secretary of the Communist Party of Cuba from 1961 until 2011. Under his administration, Cuba became a one-party communist state, while industry and business were nationalized and state socialist reforms were implemented throughout the society.
A film, also called a movie, motion picture, theatrical film, or photoplay, is a series of still images that, when shown on a screen, create the illusion of moving images.
The financial crisis of 2007–2008, also known as the global financial crisis and the 2008 financial crisis, is considered by many economists to have been the worst financial crisis since the Great Depression of the 1930s.