This study dealt knowing the importance of digital marketing on development of tourism sector in Sultanate of Oman, and aimed also clarify the great importance of digital marketing to increase the growth of tourism sector to reach new horizons progress, development and easy communication, a questionnaire was designed and distributed to community samples, the research included two axes, first is digital marketing , second is development tourism sector, the researcher used the study descriptive analytical approach due to its nature and achieve its objectives, the inclusion of statistical analysis program (SPSS) in order analyze Survey data, research samples included (221) employees and managers from Ministry of Heritage and Tourism and other parties related, where research used the random sample method in obtaining research data, The results of research showed the impact of digital marketing in increasing the revenues of tourism sector The average answers were that digital marketing contributed to entering the tourism markets effectively and influential, as well has a significant impact on use of digital marketing in development of tourism sector In Sultanate in terms of tourist satisfaction with quality of tourism product and level of The study recommended many recommendations, the most important of which are: integrated information on tourism programs, activities and events should be provided to Ministry of Heritage and Tourism, activating the application of modern technological programs for digital marketing to create a competitive environment that attracts attracting areas, heritage and tourist attractions and tourism product. The study was distinguished by fact that it dealt with dimensions of digital marketing through promotion, electronic platforms, communication with customer, linking it to sales, and expanding growth of tourism sector, and is considered one of most important studies that will enrich library in field of developing the tourism sector, and open new research horizons through a more dynamic approach to digital marketing in tourism sector and its outputs through digital revolution. Keywords: Digital Marketing, Promotion, Communication, Online Platforms, Tourism Growth