Searching for a usually leads to community-curated collections hosted on archival or enthusiast sites. These packs often include games that were officially released in Spanish or fan-made translations (ROM hacks) for classics that never left Japan or North America. Recommended SNES ROM Packs (Spanish)
If you’re building a pack manually, here are must-have Spanish patches (all available on Romhacking.net): roms snes espanol pack link
You can find dedicated collections of SNES games translated into Spanish or originally released in that language through community archives and repositories: SNES ROM pack in Spanish Searching for a
A primary source for curated collections. You can find packs specifically titled " 350 Roms SNES en Español " which are often pre-configured for easy use. roms snes espanol pack link