Diocese of Thizica

Thizica was a civitas in the Roman province of Africa Proconsularis. It served as a Roman Catholic diocese. The city's ruins are located at present-day Techga or Tchegga in northern Tunisia.

Bishopric

The names of two early bishops of the see are known:

Novellus
Vitalia

The modern use of the diocese as a titular see began in 1967. There have been four bishops since that time:

Of these, O'Brien held the personal title of archbishop.