Overcoming the losses in auxiliary activities of domestic railway stations and achieving the desired level of customer satisfaction requires the implementation of marketing and the improvement of passenger transportation services based on it. The article identifies the differences between the categories of “transport service” and “transport service provision”, “railway station” and “railway station complex”. A list of the main and additional functions of domestic railway stations is formulated. The existing classifications of railway station services are summarized, and a classification of commercial services is proposed. The main problems in providing additional services for passengers are formulated, and the reasons for their formation are identified. The essence of marketing for railway passenger transportation is presented and its role in overcoming the losses in auxiliary activities of railway stations and increasing customer satisfaction with additional services is substantiated