| Post: | Office of the Port Admiral, Portsmouth |
| Insignia: | Naval Ensign of the United Kingdom.svg |
| Insigniasize: | 150px |
| Insigniacaption: | Ensign of the Royal Navy |
| Reports To: | Commander-in-Chief, Naval Home Command |
| Appointer: | Prime Minister |
| Appointer Qualified: | Subject to formal approval by the Queen-in-Council |
| Termlength: | Not fixed |
| Inaugural: | Rear-Admiral, Peter G. La Niece |
| Formation: | 1971-1996 |
The Port Admiral, Portsmouth was a senior Royal Navy appointment first created in July 1971. In September 1971, all remaining flag officers in the Royal Navy holding the position of admiral superintendent at Royal Dockyards were re-designated as port admirals. This office was held jointly with the office of Flag Officer, Spithead until August 1975 when that post holders title was altered to Flag Officer, Portsmouth.
The office of the Port Admiral, Portsmouth was first established in July 1971. On 15 September 1971, all remaining flag officers in the Royal Navy holding dual positions of admiral-superintendents at Royal Dockyards were renamed as port admirals. This office was held jointly with the office of Flag Officer, Spithead,[1] until August 1975 when that post holder's title was altered to Flag Officer, Portsmouth. It remained a dual appointment until October 1996 when it was abolished.