Introduction:
All types of tobacco products have not different the health hazards. However, the smokeless tobacco use has ignored from the scope of policy-making, provide information on smokeless tobacco use, and cessation service.

Objectives:
The retrospective study aimed to study the situation and trends of smokeless tobacco use and factors related smokeless tobacco use.

Methods:
The samples were Thai population aged 15 years and over. Those were interviewed in the smoking and alcohol drinking survey conducted by National Statistical Offices in 2011 and 2018. A multi-stage, geographically clustered sampling design was used to collect data. Complex survey data analysis was performed to obtain the estimate data and their 95% CI. The multinomial logistic regression was used to explain the relationship between dependent variable and independent variables.

Results:
The results showed the prevalence of current smokeless tobacco use remained unchanged from 2.2% (95%CI: 2.0, 2.4) in 2001 to 2.1% in 2018 (95%CI: 1.9, 2.4). The average age at initiation decreased significantly, from 33.7 years (95%CI: 32.8, 34.7) to 30.9 years (95%CI: 29.6, 32.3). Six variables including sex, age, educational level, region, residence, and socioeconomic status in the 2018 survey were used to explain a smokeless tobacco use 40%. The first three groups with highest opportunity to use smokeless tobacco were those who aged 60 years and over (AOR 20.8, 95%CI: 13.0, 33.2), living in the northeastern region (AOR 5.1, 95%CI: 3.1, 8.3), and graduated at the highest level with less than the junior secondary school (AOR 4.6, 95%CI: 3.3, 6.5).

Conclusion(s):
The findings indicated that smokeless tobacco users were the disadvantaged people and situation of smokeless tobacco use remained the same. Therefore, developing a policy, provide the right information, and help quitting should initiative seriously and well design for increasing accessible to the target group.