Be or be may stand for:

• Be (Cyrillic): a letter of the Cyrillic alphabet
• To be: The infinitive form of the copula in the English language
• Be Incorporated: the software company that developed the BeOS operating system
• Belarusian language (ISO 639 alpha-2, be)
• Berne: canton of Switzerland
• beryllium (Be): chemical symbol for the chemical element with atomic number 4 in the periodic table.
• Beriev, the Russian design bureau
• Be number, the Bejan number

See also: BE