| Commander | |
|---|---|
&sq=Google&lang=en&file=File:UK-Navy-OF-4-collected.svg) A Royal Navy commander's rank insignia | |
| Country |  United Kingdom |
| Service branch | |
| Abbreviation | Cdr |
| NATO rank code | OF-4 |
| Next higher rank | Captain |
| Next lower rank | Lieutenant commander |
| Equivalent ranks | |
Commander (Cdr) is a senior officer rank of the Royal Navy of the United Kingdom. It is immediately junior to captain and immediately senior to the rank of lieutenant commander. Officers holding the junior rank of lieutenant commander are not considered to be commanders.