Livestock-associated methicillin-resistant Staphylococcus aureus (LA-MRSA) currently emerge globally, and antimicrobial resistance development in this group of important pathogens is a matter of concern both in human and in veterinary health. LA-MRSA may carry various novel and uncommon resistance genes against different antimicrobial classes, many of which are found on mobile genetic elements. Coagulase-negative staphylococci (CoNS) usually carry the same resistance genes as S. aureus, suggesting ongoing genetic exchange between staphylococcal species. In this study, we focused on antibiotic resistance profiles of CoNS recovered from dust and manure samples in pig farms with reported LA-MRSA history. We obtained samples from 41 pig farms and found 18 different species among 344 isolates analysed. S. sciuri was the most abundant species (46%) and was detected in more than 80% of the farms. We found alarming resistance rates versus different classes of antibiotics, and the high overall resistance rate was mainly attributed to reduced susceptibilities among S. sciuri isolates. This specie is capable of a free-living existence in the environment, notably in soil, which explains the frequent recovery of S. sciuri from dust and other materials. This property might also allow S. sciuri to come into contact with other soil-dwelling microorganisms which are generally regarded as a natural source of resistance genes. We hypothesize that S. sciuri may function as shuttle organism linking the resistance gene pool of environmental microorganisms with commensal and pathogenic bacterial species such as S. aureus. The combined data of our study highlight the general potential of CoNS as reservoirs for the evolution and spread of resistance genes in staphylococci and beyond.