# CIO

/ˌsiˌaɪˈoʊ/ (US) · CEFR C1 · Noun

Source: https://englishreference.com/word/cio
Updated: 2026-05-09

## Definition

Stands for Chief Information Officer. The person in charge of a company's technology and computer systems. They make sure the business uses the best digital tools to reach its goals.

For teachers: Abbreviation for Chief Information Officer. The executive responsible for the management, implementation, and usability of information and computer technologies.

## Examples

- The CIO decided to move all company data to the cloud.
- After the data breach, the CIO implemented new security protocols to protect the firm's intellectual property.
- While the CEO focuses on overall strategy, the CIO must ensure that the technological infrastructure is robust enough to support rapid scaling and digital transformation across all departments.

## Usage notes

- Typically used as a title or a job description within corporate hierarchies.

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