.OLK File Extension

There is only one file type that uses the .OLK extension:

Outlook Address Book File

Outlook Address Book File
  • Developer Microsoft
  • Popularity
    4.5 (15 votes)
  • Category Data Files
  • Format Binary

Address book created by Microsoft Outlook, an email application; may contain contact information for people and organizations; can store names, phone numbers, addresses, titles, organization data, and other contact information; used for saving and loading contacts.

OLK files can be opened manually in Outlook 2003 by typing the following command: Outlook.exe /l olk_filename. OLK files can also be opened by Microsoft Word 2003 and used for mail merge and other document operations.

Outlook contacts are more often stored as Personal Address Book (.PAB) files.

Software's name License Platforms
Microsoft Outlook Microsoft Outlook Commercial MacWindows
Microsoft Word Microsoft Word Commercial MacWindows

Updated: June 19, 2010

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