Nocardiosis, an infectious disease most commonly caused by the nosocomial pathogen Nocardia asteroides, predominantly affects immunosuppressed individuals and often presents as a pulmonary infection transmitted through inhalation. Although initial drugs like sulfadiazine and sulfisoxazole were used, their poor tissue penetration and the requirement for prolonged therapy have led to their exclusion from current treatment regimens. Consequently, there is a growing demand for novel therapeutics to suppress the pathogenic activity of N. asteroides. The pathogenic strain NCTC11293 of N. asteroides demonstrated a high completeness level of 98.19% in the CheckM analysis, with PGAP annotation identifying 6485 proteins. Given its clinical relevance and resistance profile, the NOCAP analysis revealed glycosyltransferase as a potential drug target associated with drug resistance and pathogenicity. The predicted and validated structure of the glycosyltransferase protein (accession WP_019050588.1) was subjected to structure-based virtual screening using the Schrödinger Suite against marine and phytochemical databases, including CMNPD, SWMD and IMPPAT. This multi-tier screening identified four promising hit molecules: CMNPD1518, CMNPD23345, SWMDGA001, and IMPY466077. The docking scores and MM-GBSA binding energies ranged from -7.20 to -8.90 kcal/mol and -49.81 to -59.90 kcal/mol, respectively. These hit molecules adhered to Lipinski's Rule of Five and exhibited accepted pharmacokinetic properties, along with balanced electronic structural characteristics, illustrating their higher reactivity and stability. Molecular dynamics (MD), essential dynamics (ED) analyses, including PCA-based FEL, and DSSP assessments reinforced the structural stability of the glycosyltransferase-phytochemical complexes. These computational findings suggest that the identified molecules represent promising therapeutic candidates for the treatment of nocardiosis.