Handling errors in GraphQL can be done in several ways. One common approach is to include an 'errors' field in your types, which can be populated with any errors that occur while fetching or modifying data. You can also use the 'errors' method on the 'context' object in your resolvers to add errors to the response. Additionally, you can raise exceptions in your resolvers, which will be caught and converted into errors by the GraphQL library.