How to Say "identical twin" in Spanish
The Spanish word for “identical twin” is “gemelo” — A2 level. This is a very common word in everyday Spanish.

Examples
Mi hermano es mi gemelo idéntico.
My brother is my identical twin.
Las torres gemelas eran los edificios más altos.
The twin towers were the tallest buildings.
Ella tiene una hermana gemela que vive en Madrid.
She has a twin sister who lives in Madrid.
Gemelo vs. Mellizo
Spanish has two words for twins. Use 'gemelo' specifically for identical twins who look exactly alike. Use 'mellizo' for fraternal twins who might look different.
Gender Agreement
If you are talking about a female twin, the word changes to 'gemela.' If it's a mixed group, use the masculine plural 'gemelos'.
Calling all twins 'gemelos'
Mistake: “Calling fraternal twins 'gemelos'.”
Correction: Use 'mellizos' for twins that don't look exactly the same; 'gemelos' is for the 'carbon copy' look.
Related Translations
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