An NFS Client is a software component that allows a computer to access files stored on a remote server using the Network File System protocol. This enables users to read and write files on the server as if they were on their local machine, facilitating file sharing across a network. The NFS protocol is commonly used in Unix and Linux environments, making it easier for multiple users and systems to collaborate. By connecting to an NFS Server, the client can mount shared directories, providing seamless access to data without needing to transfer files manually.