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CIO

American  
Or C.I.O.

abbreviation

  1. Business. chief information officer: an executive in an organization who oversees policies and decisions relating to information technology and computer systems.

  2. Business. chief investment officer: an executive in an organization who oversees financial assets.

  3. Congress of Industrial Organizations.


CIO British  

abbreviation

  1. Congress of Industrial Organizations See also AFL-CIO

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

“After the strength of the recent rally, a pullback in markets was to be expected,” writes Ulrike Hoffmann-Burchardi, CIO Americas and global head of equities, UBS Chief Investment Office.

From Barron's • Jun. 8, 2026

Belle Lin is a reporter writing about AI and enterprise technology for the WSJ Leadership Institute's CIO Journal.

From The Wall Street Journal • Jun. 3, 2026

David Miller, CIO and portfolio manager at Catalyst Funds, told MarketWatch that despite the “large tear” Micron’s stock has been on, it’s still trading at under 10 times forward earnings-per-share estimates.

From MarketWatch • May 27, 2026

David Miller, CIO and portfolio manager at Catalyst Funds, told MarketWatch that despite the “large tear” Micron’s stock has been on, it’s still trading at under 10-times forward earnings-per-share estimates.

From MarketWatch • May 27, 2026

The CIO 290 is going to buy me and my woman and the kids a nice, fine, pretty home.

From Blue Ridge Country by Caldwell, Erskine

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