This study examined the relationships of some agronomic traits associated with achene yield and oil content in selected S1 per se families of Giza 102 sunflower cultivar. And to employ the cluster and principle component (PC) analyses to identify and classify superior S1 families based on the genetic distances. The current work was carried out at Shandaweel Agric. Res. St., ARC, Sohag, during two successive summer seasons, 2016 and 2017. 23 S1 per se families and Giza 102 were evaluated for days to 50% flowering (DF), days to maturity (DM), plant height (PH) in cm, stem diameter (SD) in cm, head diameter (HD), 100-seed weight (SI) in g, achene yield per plant (AY) in g plant-1, achene yield per plot (ACP) in g plot -1 and oil content (%). Achene yield/plot showed highest positive correlation coefficients with achene yield/plant followed by seed index, head diameter and stalk diameter at genotypic and phenotypic levels. Three main components (PC1, PC2 and PC3) have been extracted that accounted for 78.65 % of the variability. The portion of each three components was 38.09, 28.23 and 12.33% of total variance, respectively. Achene yield/plant and achene yield/plot have the highest weight in PC1 and S1 families can be grouped by utilizing these two components. Head diameter, SI and SD were associated positively with PC1. Days to flowering, DM and PH were correlated to PC2, while oil content was associated with PC3. The 23 S1 families and Giza 102 were clustered into mainly three clusters. Cluster I was characterized by the highest mean value for achene yield/plot, achene yield/plant, head diameter, stalk diameter and seed index. The research concluded that the S1 families i. e. 15, 9, 5, 18, 14, 22 and 23 could be selected for simultaneous improvement for yield and earliness in sunflower.