ORACLE (from "Optional Reception of Announcements by Coded Line Electronics") was a commercial teletext service first broadcast on the ITV network in 1978 and later additionally on Channel 4 in the United Kingdom from 1982.

It was developed and launched by the Independent Broadcasting Authority's engineering division, about 4 years after BBC's Ceefax service.

Under the original plans for the ITV franchise renewal, they were to have been scrapped at the end of 1992 and the few scan lines they used given to the highest bidder.

ORACLE successfully campaigned for the creation of a franchise for the teletext service on ITV and Channel 4, only to find themselves outbid by Teletext Ltd., a consortium originally comprising Associated Newspapers, Koninklijke Philips Electronics N.V. and Media Ventures International, who started broadcasting at midnight on New Year's Day 1993.

Shown in 15-minute bursts, and alternating with 4-Tel on View and showings of the ETP-1 testcard, the pages were seen during the day when Channel 4 was not broadcasting actual programmes.

It was then replaced by the service from Teletext Ltd. ORACLE did not carry television listings beyond its midnight closing time on New Year's Eve 1992.