Most items in the Golden Sun series are either one-of-a-kind or come in unlimited quantities. The following items are the rare exception, as players can acquire more than one but not as many as they please.

It should be noted that some of these items are only limited in certain games. Also, some items may be unlimited at certain points in a game but become limited later on. Please see the individual articles for more details.

This category does not encompass otherwise-unique items that players can acquire multiples of by transferring them from Golden Sun to Golden Sun: The Lost Age, nor items that are only indirectly limited due to the fact that the consumable items used to obtain them are limited (such as the Lemuria Springs prizes won in Lemuria via the use of Lucky Medals, which are limited in The Lost Age).