Abstract: Using the data derived from the 1989 Bangladesh Fertility Survey, the 1993-94 and 1996-97 Bangladesh Demographic and Health Surveys, this article attempts to investigate the trend of nuptiality pattern and its effect on overall fertility. Findings suggest moderate change in the proportion married. The nuptiality index began to change since 1975 and modest decline in fertility is observed around this time which leads us to conclude that the decline in fertility can be partly explained by changes in the proportion married.