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Base excess (BE), excess or deficit in the amount of base in the blood •
Beryllium, symbol Be, a chemical element
Computing •
.be, the country code top-level domain for Belgium •
Backup Exec, backup and recovery software from Veritas Software •
Big-endian, a system that stores the most significant byte of a word at the smallest memory address •
BeOS, an operating system by Be
Physics •
Baumé scale (°Bé), a density scale •
Be star, in astronomy, a B-type star •
Bejan number (Be), in thermodynamics and fluid mechanics ==Transportation==