CT or ct may stand for:
CT, or the Corporation Trust Company, is a wholly owned subsidiary of Wolters Kluwer, a multi-national information services company based in the Netherlands with operations in over 35 countries. CT is the umbrella brand for two businesses: CT Corporation and CT Lien Solutions. CT Corporation is the largest registered agent service firm in the world representing hundreds of thousands of business entities worldwide. It provides software and services that legal professionals use.
This is a list of digraphs used in various Latin alphabets. Capitalization involves only the first letter ''(ch – Ch)'' unless otherwise stated ''(ij – IJ).''