Abstract A marketing information system is a compilation of measures and techniques for customary scheduling, compilation, examinations, and presentation of data for use in coming up with marketing choices (Brdesee & Corbitt, 2013). As such, the research report below focuses on the effect of marketing information systems on sales performance in Saudi Arabia. It investigates the different aspects of the marketing information systems. To achieve this, the research analyses people’s behaviors, technology, and the processes that scan and gather data from the operations within the corporations and from the field. With the help of the MIS, the decision-makers can develop specific marketing strategies to achieve the company’s aims and objectives. In order to verify whether there is any relationship between the sales performance and Marketing information systems, a survey was conducted in two Saudi Arabian companies. A secondary search was also undertaken on the internet. The result of the survey and the studies proved that marketing information has an impact on sales performance. Introduction With increasing revenues from oil industries, computer usage, and internet connectivity in Saudi Arabia has significantly increased (Brdesee & Corbitt, 2013). Expansion of computer technologies in Saudi Arabia has currently changed the style of product selling and management these days. Saudi Arabian marketing managers believe that the marketing information system has high potential to cater to the needs of salespeople in eliciting sales and meeting customer satisfaction. Marketing information system fulfills the customer’s needs while meeting the aims and objectives of an organization. The strategy involved relates to design, specification, sales promotion, pricing policy, sale outlets, service, and a hoard of other elements. As such, it is a management science applied to the marketing of a product through decision-making and implementation. Through this, a company’s product information can reach to the customers or end-users enhancing profits and customer satisfaction. With increased effects of globalization, Saudi Arabian firms should note that competition in the field of marketing is very high and that sales performance will not improve without the support of an effective marketing information system. The system components The marketing information system makes use of people’s data, technology, and the processes to scan and gather data from the operations within the company and from the field (Brdesee & Corbitt, 2013). The system will filter the data. After making the proper selection, the same will be reorganized as information to be presented to the management and other decision-makers of the company. A marketing information system has four main components. In the four components, the internal records furnish information regarding performed sales, stocks, and financial accomplishments. On the other hand, the section relating to marketing intelligence gives outside information about the market setting. The details of the sources connected with the marketing information are papers written on business topics, dailies, other periodicals, and trade journals. Marketing managers interact with consumers, partners, and s