Pownoll Bastard Pellew, 2nd Viscount Exmouth (1 July 1786 – 3 December 1833) was an English peer and officer of the Royal Navy.

Like his father, and his younger brother Fleetwood Pellew, he served in the Royal Navy and attained the rank of Post Captain in 1806.

Pellew was made a lieutenant well before he had served the mandatory seven years at sea, as his father had considerable influence with the authorities.

Pellew underwent the mandatory court martial for the loss of his ship and was found not guilty of negligence.

Pownoll was immediately made acting-captain of the frigate Sir Francis Drake, and was given Terpsichore upon his father promoting him to post-rank in 1806.

After his first marriage in 1808, Pellew returned to England and started building the new family seat of Canonteign in Devon.