In this chapter, the filter designs using spoof surface plasmon polariton and their advantages are discussed. The types of filters, studied in this chapter, are bandpass filtersBandpass filtersand band-notched filtersBand-notched filter. Different techniques used in the design of bandpass and band-notched filters using spoof surface plasmon polariton are discussed in this chapter. This chapter also describes detailed study of advantages of designing a spoof surface plasmon polariton-based filter. It will help the reader toGain gain insight into the need to use SSPP for filter design.