Founded as the Institute of Linguists in 1910, the Chartered Institute of Linguists (CIOL) received its royal charter in 2005,^[1] and is the UK's not-for-profit royal charter body for languages and linguists.

CIOL supports linguists in their careers and lives, and promotes proficiency in languages worldwide.

Professional grades of membership are: Associate (ACIL), Member (MCIL) and Fellow (FCIL) there are also several Affiliate grades of membership.

CIOL also hosts the IoL Educational Trust (IoLET) which a charitable company limited by guarantee and an accredited awarding organisation. IoLET's purpose is to promote the teaching and study of modern languages.

The patron of CIOL is HRH Prince Michael of Kent.^[2]

Qualifications include the:

• Diploma in Translation (DipTrans) – Level 7 – the gold standard Master's level qualification for work as a translator
• Certificate in Translation (CertTrans) – Level 6 – a benchmark Degree-level qualification for translation and work in international organisations
• Diploma in Public Service Interpreting (DPSI) – Level 6; required for police and court interpreting and recommended for health and wider public services

CIOL also offers Language Level Assessments and Certification of English speaking skills.

• Donald Adamson (Hon FCIL)
• Baroness Coussins (Hon FCIL)
• Mary Creagh MP
• David Crystal (Hon FCIL)
• Andrew Dalby (Hon FCIL)
• Susie Dent (Hon FCIL and Vice-President)^[3]
• Baroness Garden (Hon FCIL)
• Susan Price
• Sir Ivor Roberts
• Peter Sutton
• Diana Wallis MEP (Hon FCIL)
• Michael Worton (Hon FCIL)^[4]

• "IoL Educational Trust, registered charity no. 1090263". Charity Commission for England and Wales.
• Chartered Institute of Linguists website
• CIOL Language Level Frameworks
• The Linguist – magazine published by the CIOL