The purpose of this study was to examine the psychometric properties of the Functional Social Support Questionnaire (FSSQ) in pregnant women. A secondary analysis of data from 186 low-income pregnant women in their third trimester was conducted to assess the internal consistency reliability, dimensionality, and concurrent validity of the FSSQ. Cronbach's alpha was .83. Factor analysis supported the unidimensionality of the FSSQ. Correlations with the Interpersonal Support Evaluation List (ISEL) and the Center for Epidemiologic Studies-Depression Scale (CES-D) supported concurrent and construct validity. This secondary analysis provided evidence of the psychometric soundness of the FSSQ in this sample.