Aim One of the major barriers in making a diagnosis and managing dementia in the Chinese American population is the stigma surrounding the disease. The goal of the present study was to examine differences in the stigma and perceptions of dementia and diabetes among Chinese Americans. Methods A total of 449 Chinese Americans answered one survey with two self‐administered, true/false questionnaires assessing stigma and perceptions toward dementia and diabetes. Higher total scores were associated with increased stigma and negative perceptions. The results of the two questionnaires were compared to assess for any differences in attitudes. Results For the dementia questionnaire, the mean score was 5.58 (95% CI 5.37–5.79) with a standard deviation of 2.31. For the diabetes questionnaire, the mean score was 2.01 (95% CI 1.85‐2.18) with a standard deviation of 1.76. Statistical analysis showed that Chinese Americans were more likely to hold stigmatized views toward dementia than diabetes (t = 33.9, d.f. = 448, P < 0.01). Conclusions The higher average score in the dementia questionnaire shows that there are greater stigma and negative perceptions of dementia in comparison with diabetes among Chinese Americans. Considering that stigma delays access to healthcare for dementia‐related symptoms, efforts should be taken to minimize negative attitudes associated with dementia. Geriatr Gerontol Int 2017; 17: 760–764.