|First appearance:||"Naughty Nautical Neighbors"|
|Latest appearance:||"Safe Deposit Krabs"|
|List of objects|
The Rubber Duck appears in the episodes "Naughty Nautical Neighbors," "The Paper," "Gary Takes a Bath," "Doing Time," "Suction Cup Symphony," and "Stuck in the Wringer." It makes a brief appearance in "Safe Deposit Krabs."
The Rubber Duck is a small, yellow, plastic duck. It has orange eyes and it has "PATЯICK" written below its wing, with the "R" written backwards. This shows that the rubber duck obviously belongs to Patrick.
In "Stuck in the Wringer," Patrick is looking for his rubber duck, which SpongeBob ends up slipping on. In "Naughty Nautical Neighbors," Patrick is shown in the bathtub with a duck and a toy boat. Another rubber duck appears in "The Paper," but it is Squidward's. In "Squid's Day Off," Squidward mentions a rubber duck that Mr. Krabs wants him to get, possibly as a joke. A rubber duck also appears in Suction Cup Symphony, being squeezed by Patrick. In the episode Stuck in the Wringer, it is shown to have Patrick's name written on it. A Rubber Duck also appears in the episode "Safe Deposit Krabs" where it was included in Patrick's Bank Breaking Kit.
- In Battle for Bikini Bottom, on some occasion, if you defeat a robot, a rubber duckie might pop out of exploding robots. However, there is no reason for it to be in the game. Also, if you collect it before it disappears, nothing will happen. this could possibly mean Patrick has more rubber ducks and the robots stole them other than socks.
- A rubber duck also appears in "Gary Takes a Bath" when SpongeBob pulls it out of his bathtub, he could have stole it, because the duck wasn't seen much after that episode.