In India, the Director General of Police (abbr. Full Forms Of DGP, ACP, DCP, SI, CI, DSP, DIG, IG, SP Thanks For Watching, Please. Police Ranks - Full Forms. DGP full form, ADGP full form, IGP full form, DIGP full form, ACP full form, PI full form. Full form of IPS, SSC, UPSC, IAS, ACP/DSP, PSC including details like. The full form of DGP is Director General of Police.