Here are some examples:
* Swahili: "Malkia"
* Yoruba: "Oba" (for both king and queen, the context usually makes it clear)
* Zulu: "Indlovukazi"
* Amharic: "Endaşe"
* Hausa: "Sarkila"
* Somali: "Boqorad"
It's important to note that some languages may have more than one word for "queen", depending on the context.
If you're looking for a specific African language, please let me know, and I can provide the relevant word.