Poopdeck Pappy is a fictional character featured in the Popeye (Thimble Theatre) comic strip and animated cartoon spinoffs.

In this cartoon, it is revealed that Popeye has a long-lost father, not seen since infancy, who is being held captive in the bizarre realm of Goon Island.

In the mêlée that ensues, the filmstrip is supposedly broken and the projectionist must safety pin it back together to finish the cartoon.

Pappy is far less principled than his son, stealing from Popeye's bank account and trying to sell water for $5,000 in Death Valley (to which Popeye, while pouring water for the parched traveler, tells Poopdeck, "I yam disgustipated wit' ya!").

After Segar's death, Poopdeck's mother (called Granny who looks like her son and grandson, but wearing a bonnet) was introduced into the strip.

She refuses to treat her son as an "eighty-five-year-old adult" (his age has been reduced from 99 to 85 in the comic strip) and often disciplines him after his raucous "nights on the town".