Competition Promotion and Market Protection Act 2007 defines an entity producing any goods or services to have a 'dominant position' if it holds 40 percent or more of the annual production or distribution of such products or services in the market. In other words, an entity having a market share of 40 percent or more is considered as having a 'dominant position' according to the prevailing law in Nepal. The monthly MIS reports published by Nepal Telecommunications Authority (NTA) provide subscription data of telecommunication companies in both fixed and mobile market segment.  However, it is to be noted that the data is not segregated based on mobile (origin) and mobile (termination) and hence we use the overall subscription data in the mobile market segment to compute the market share. The computation of market share using this data shows that Nepal Telecom (NTC), also known as Nepal Doorsanchar Company Limited (NDCL), and Ncell had 47.5% and 52.5%, respectively, of total mobile telephony services subscribers in 2014 (mid-December); 47.2% and 47.8%, respectively, in 2015 (mid-November);  48.8% and 46.8%, respectively, in 2016 (mid-December); 49.7% and 45.5%, respectively, in 2017 (mid-December);  52.3% and 41.8%, respectively, in 2018 (mid-December); 54.6% and 40.5%, respectively, in 2019 (mid-December); and 52.6% and 41.6%, respectively, of total mobile telephony services subscribers in 2020 (mid-August). Hence, NTC and NCELL are found to be dominant in mobile line market segment for the considered period 2014-2020.