About 100 fiber-optic connector types have been introduced in today's market, but only a small subset is common in modern networks. Each type is optimized for specific uses and includes features suitable for different devices. A fiber optic connector is a mechanical device used to align and join optical fibers, enabling light to pass through with minimal loss. A fiber optic coupler is a device that can distribute the optical signal. This article explores the wide range of fiber optic connector types, from legacy SC and ST to modern MPO/MTP and VSFF designs.