Browse Definitions :
File Extension

WAB File Format

Outlook address book file (Microsoft Outlook, Outlook Express)

WAB file format icon

WAB is a file extension for a Windows Address Book file format used by Outlook and Outlook Express.

WAB files store contact information, such as name, mailing address email address and phone number.

WAB files are similar to PAB files used in Outlook or the more generic VCF files.


Learn more about WAB files:

See our Outlook Cheat Sheets.

Visit the Microsoft Outlook Express how -to webpage.

Search for answers to Outlook Express-related questions at IT Knowledge Exchange.

See answers to Outlook Express-related questions at IT Knowledge Exchange.

This was last updated in August 2010
Browse File Extensions Alphabetically:

Join the conversation

1 comment

Send me notifications when other members comment.

Please create a username to comment.

I was looking for WAB in the context of WAR files and OSGi bundles. I don't appear to have found it!



  • risk assessment

    Risk assessment is the identification of hazards that could negatively impact an organization's ability to conduct business.

  • PCI DSS (Payment Card Industry Data Security Standard)

    The Payment Card Industry Data Security Standard (PCI DSS) is a widely accepted set of policies and procedures intended to ...

  • risk management

    Risk management is the process of identifying, assessing and controlling threats to an organization's capital and earnings.



  • telemedicine (telehealth)

    Telemedicine is the remote delivery of healthcare services, such as health assessments or consultations, over the ...

  • Project Nightingale

    Project Nightingale is a controversial partnership between Google and Ascension, the second largest health system in the United ...

  • medical practice management (MPM) software

    Medical practice management (MPM) software is a collection of computerized services used by healthcare professionals and ...



  • hot plugging

    Hot plugging is the addition of a component to a running computer system without significant interruption to the operation of the...

  • M.2 SSD

    An M.2 SSD is a solid-state drive (SSD) that conforms to a computer industry specification and is used in internally mounted ...

  • kilobyte (KB or Kbyte)

    A kilobyte (KB or Kbyte) is a unit of measurement for computer memory or data storage used by mathematics and computer science ...