CdP 4 nanoclusters were fabricated by incorporation into the pores of zeolite Na-X and by deposition of the clusters onto a quartz substrate using the laser ablation-evaporation technique. Absorption and photoluminescence (PL) spectra of CdP 4 nanoclusters in zeolite were measured at temperatures 4.2, 77, and 293 K. Both absorption and PL spectra consist of two blue-shifted bands. We performed DFT calculations to determine the most stable clusters configuration in the size region up to the size of the zeolite Na-X supercage. The bands observed in absorption and PL spectra were attributed to the emission of (CdP 4 ) 3 and (CdP 4 ) 4 clusters with binding energies of 3.78 and 4.37 eV per atom, respectively. The Raman spectrum of CdP 4 clusters in zeolite proved the fact of creation of (CdP 4 ) 3 and (CdP 4 ) 4 clusters in zeolite pores. The PL spectrum of CdP 4 clusters produced by laser ablation consists of a single band that was attributed to the emission of the (CdP 4 ) 4 cluster.