<p>The Los Angeles abrasion (LAA) value is one of the basic properties of rock aggregates reflecting their resistance to mechanical abrasive factors such as repeated impact loading. Brittleness represents a key mechanical attribute of rocks, exerting a strong influence on their behavior during excavation, drilling, blasting, and aggregate production. This study investigates the relationship between LAA values and five strength-based brittleness indices (<i>B</i>₁-<i>B</i>₅) derived from uniaxial compressive strength (UCS) and Brazilian tensile strength (BTS) values of different rock types. A dataset of 138 rocks (76 sedimentary, 42 igneous, and 20 metamorphic) compiled from 11 literature sources was analyzed using regression methods. Results show that while brittleness indices <i>B</i>₁ and <i>B</i>₂ do not exhibit any significant correlation with LAA, brittleness indices <i>B</i>₃, <i>B</i>₄, and <i>B</i>₅ show moderate inverse-logarithmic relationships across all investigated rock types. After normalization with UCS, brittleness indices <i>B</i>₃, <i>B</i>₄, and <i>B</i>₅ exhibit very strong inverse relationships with LAA values (R² up to 0.96). Normalized LAA significantly improved correlations, particularly for <i>B</i>₃, which provided the most reliable predictor across all rock types according to ANOVA. An empirical model based on <i>B</i>₃ was developed and validated with 16 different rock samples, demonstrating close agreement between measured and predicted LAA values. These findings confirm that strength-based brittleness indices, especially <i>B</i>₃, can serve as robust predictors of aggregate abrasion resistance.</p>