Extended BIOS may refer to:

• XIOS, the extended BIOS in Digital Research's MP/M, Concurrent CP/M, Concurrent DOS, Multiuser DOS and REAL/32 (since 1979)
• XBIOS, the extended BIOS in Atari TOS-based computers (since 1984/1985)
• EX-BIOS, non-standard BIOS extensions in the HP Vectra series of computers (since 1985)

• BIOS extension
• Enhanced BIOS (LBA)
• VESA BIOS Extensions (VBE)

This disambiguation page lists articles associated with the title Extended BIOS.
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