The objective of this study was to estimate genetic parameters of foal inspection scores from the International Sporthorse Registry and Oldenburg Registry North America. Traits included type and conformation (TC), athletic ability of movement (AM), overall development (OD), total score (TS), and the binary trait premium status (PS). Fixed effects included sex, year of birth, year of birth by sex interaction, inspection period (1999 to 2005 or 2006 to 2009), breed of dam and breed of sire. Heritabilities and genetic correlations were estimated using an animal model. Approximately 27% of sires produced only one offspring and therefore their records were removed as they do not contribute information to genetic analyses. All trait means increased over time, with the most significant increase occurring from 1999 to 2003. Female foals exhibited significantly higher scores for all traits excluding AM. Mean scores were significantly higher in inspection period 2 than period 1. Offspring of warmblood dams were consistently scored higher than offspring of all other dam breeds. Offspring of Thoroughbred dams generally had higher scores than offspring of miscellaneous or unknown dam breeds. Percentage of foals named premium ranged from 32 to 56% and registry decisions to change the criteria for determining PS in 2008 have not significantly reduced this percentage. Heritabilities were estimated to be 0.45±0.05, 0.47±0.05, 0.49±0.05, 0.55±0.05, and 0.32±0.04 for TC, AM, OD, TS, and PS, respectively. Heritability of PS was 0.51 when transformed from the binary to the underlying normal scale. Genetic correlations among TC, AM, OD, and TS were extremely high and favorable (0.80 to 0.99). Overall, foal inspection scores appear to have the potential to strengthen the breeding program of these sporthorse registries, provided scored traits are favorably correlated with performance traits in adult horses.