The Coronavirus Anxiety Scale (CAS) is among the first few published screening tools for assessing dysfunctional anxiety induced by the current COVID-19 pandemic. The CAS was translated into the Bangla language following the International Test Commission’s guidelines for this adaptation study and placed in an online survey (N = 737, with a mean age of 26.55 (SD = 7.166 years) to assess the psychometric properties of the Bangla version of the scale. Results suggested that all items had a good item discrimination index and single-factor structure with good factor loadings. The CAS Bangla version was found to have good internal consistency reliabilities, test-retest reliability, and composite reliability (≥ 0.7). The measurement invariance suggested invariances across age groups and gender. The CAS Bangla version showed a high correlation to the anxiety subscale of the short form of the Depression Anxiety Stress Scale (DASS-21) and a moderate correlation to the depression subscale of the DASS-21 and the COVID-19 Worry Scale. This validation of a Bangla CAS scale would be helpful for mental health practitioners to assess pandemic anxiety among the Bangladeshi people.