So you know when you go to school and your teacher gives you books to read? Well, the Office of Public Sector Information is sort of like the teacher for grown-ups in England.
They are in charge of making sure that all the rules and laws that the grown-ups have to follow are written down in books and papers that everyone can read.
They also make sure that important information, like how much it costs to buy things or what the government is doing, is available for people to see.
The Office of Public Sector Information makes sure that the grown-ups have access to all the important information that they need to know to make good decisions.