Information technology law (IT law), also known as information, communication and technology law (ICT law) or cyberlaw, concerns the juridical regulation of information technology, its possibilities and the consequences of its use, including computing, software coding, artificial intelligence, the internet and virtual worlds. The ICT field of law comprises elements of various branches of law, originating under various acts or statutes of parliaments, the common and continental law and international law. Some important areas it covers are information and data, communication, and information technology, both software and hardware and technical communications technology, including coding and protocols.

Due to the evolving nature of the technology industry, the legal frameworks governing it vary significantly across jurisdictions and change over time. Information technology law primarily governs the dissemination of digital information and software, information security, and cross-border commerce. It intersects with issues in intellectual property, contract law, criminal law, and fundamental rights such as privacy, the right to self-determination and freedom of expression. Information technology law also addresses emerging issues related to data breaches and artificial intelligence.

Information technology law can also relate directly to dissemination and utlilzation of information within the legal industry, a field known as legal informatics. The nature of this utilisation of data and information technology platform is changing with the adoption of Artificial Intelligence systems, with major lawfirms in the United States of America, Australia, China, and the United Kingdom reporting pilot programs of Artificial Intelligence programs to assist in practices such as legal research, drafting and document review.

IT law does not constitute a separate area of law; rather, it encompasses aspects of contract, intellectual property, privacy and data protection laws. Intellectual property is an important component of IT law, including copyright and authors' rights, rules on fair use, rules on copy protection for digital media and circumvention of such schemes. The area of software patents has been controversial, and is still evolving in Europe and elsewhere.^{[page needed]}

The related topics of software licenses, end user license agreements, free software licenses and open-source licenses can involve discussion of product liability, professional liability of individual developers, warranties, contract law, trade secrets and intellectual property.

In various countries, areas of the computing and communication industries are regulated – often strictly – by governmental bodies.

There are rules on the uses to which computers and computer networks may be put, in particular there are rules on unauthorized access, data privacy and spamming. There are also limits on the use of encryption and of equipment which may be used to defeat copy protection schemes. The export of hardware and software between certain states within the United States is also controlled.

There are laws governing trade on the Internet, taxation, consumer protection, and advertising.