Is a ritual summon considered special summon?

Yes, a ritual summon is considered a special summon. In Yu-Gi-Oh!, there are two main categories of summons: Normal Summons and Special Summons. A Normal Summon involves placing a monster from your hand face-up in Attack or Defense Position, while a Special Summon involves any other method of bringing a monster onto the field. Ritual Summons fall under the category of Special Summons, as they require a specific monster, Ritual Spells, and Tributes to be performed. Therefore, a ritual summon is indeed considered a special summon.