Background: Early every third Indian suffers from one or the other kind of thyroid disorder, which most often causes weight gain and hormonal imbalances, and is more commonly seen in women, according to a survey. Objectives: To assess the pre-test knowledge regarding selected thyroid disorders among Women, and to associate the post-test knowledge score with selected demographic variable. Methodology: a pre experimental one group pre-test post-test design was adopted for the study. It was conducted over 60 women and was selected by using non probability convenient sampling technique. The analysis reveals that posttest mean knowledge score was higher 18.13 with SD of 1.89 when compared with the pre-test mean knowledge score value which was 8.85 with SD of 2.76. The calculated‘t’ value 25.41 is greater than table value 2.00 at 0.05 level of significance. Hence it is statistically interpreted that the planned teaching programme on knowledge regarding selected thyroid disorders was effective. Thus the H1 is accepted and H0 is rejected. Conclusion: The significantly association was found on knowledge score with age (in years), marital status, monthly family income and none of the other demographic variables were associated with knowledge score.