The Field experiment was conducted at Uttaranchal University Experimental Farm in Dehradun, to evaluate the effects of farmyard manure and vermicompost on maize-based intercropping system during Kharif, 2017. The experiment was laid out in split plot design replicated three times with three main and five sub plots -treatments viz., M1– Control, M2 – FYM + RDF and M3 – Vermicompost + RDF, S1 – Sole Maize, S2 – Maize + Cowpea, S3 – Maize + Black gram, S4 – Maize + Green gram and S5 – Maize + Amaranthus. With regard to the effect of organic manures, vermicompost @ 5 t ha-1 + RDF recorded the highest growth and yield components in maize based intercropping system. It was followed by FYM @ 12.5 t ha-1 + RDF. Among the cropping system, maize + cowpea intercropping system satisfyingly influenced the growth and yield components of maize such as plant height, LAI, DMP, cob length, cob diameter, number of grain cob-1 and grain yield. The lowest values of all growth and yield components were recorded under maize + amaranthus /green gram intercropping systems. The maize + cowpea (S2) intercropping system with the addition of vermicompost @ 5 t ha-1 + RDF (M3) recorded the highest grain yield of 6141 kg ha-1 in Kharif, 2017. The uptake of nutrients was found to be significantly higher in vermicompost application with maize + cowpea intercropping system. From the present investigation, it was concluded that maize intercropped with cowpea along with the addition of vermicompost @ 5 t ha-1 + RDF, is an economically feasible and eco-friendly approach to realize better return in maize.