A person can have multiple nationalities or citizenships, and there is no universal legal limit to how many a person can hold. Some countries allow dual or multiple citizenships, meaning a person can be a citizen of two, three, or even more countries simultaneously. For example, countries like the UK, Canada, Australia, and many in the European Union permit multiple citizenships. On the other hand, some countries, such as China and India, do not allow dual citizenship and require renouncing the previous citizenship to acquire a new one. The exact number a person can have depends on the laws of the countries involved. Rarely, there have been cases reported where individuals hold up to 10 citizenships. It is important to check each country's regulations, as some countries may restrict or prohibit multiple citizenships altogether.