The aims of this systematic review were to describe, critique, and summarize research about the effects of education about urinary incontinence on nurses' and nursing assistants' knowledge and attitudes toward urinary incontinence, their continence care practices, and patient outcomes. We searched key electronic databases (PsycINFO, MEDLINE, CINAHL, Web of Science, and Cochrane Library) for full-text primary research articles written in the English language and published between January 1990 and October 2018. Studies were included if they described a controlled or uncontrolled trial of an education program for nurses or nursing assistants about urinary incontinence and evaluated the effects of the program on either knowledge, attitudes, practice, or patient outcomes. Data were extracted about the aim, design, sample and setting, trial methods, intervention, outcomes of interest, and findings. Quality appraisal was conducted using a mixed-methods appraisal tool. Results are presented in tabular format and reported descriptively. Nineteen studies met inclusion criteria; most were set in the United States or the UK. All trials that evaluated the effects on knowledge reported improvements; however, the effects of education on attitudes were mixed as were the effects of education on continence care practices. Eleven of the 19 studies reported the statistical effect of education on patient outcomes. Uncontrolled trials reported improvements in nursing home residents' and community-dwelling patients' continence status, but this effect was not observed in a large controlled trial. Similarly, 2 studies set in inpatient rehabilitation found no significant differences in patient continence outcomes following an educational intervention targeted to nurses.