How to Say "memo" in Spanish
The most common Spanish word for “memo” is “recordatorio” — use this when 'memo' refers to a personal reminder, often for oneself or a close contact, to complete a task or attend an event.
recordatorio
re-kor-dah-TOH-ryohrekoɾðaˈtoɾjo

Examples
Puse un recordatorio en el móvil para ir al médico.
I set a reminder on my phone to go to the doctor.
Este correo es solo un recordatorio amistoso sobre la reunión.
This email is just a friendly reminder about the meeting.
Recibí un recordatorio de pago de la factura de la luz.
I received a payment reminder for the electricity bill.
Always Masculine
Even if you are a woman or the thing you are remembering is feminine, 'recordatorio' is always masculine. Use 'el' or 'un'.
Used with 'de'
To say what the reminder is for, use 'de' followed by the topic, like 'un recordatorio de la cita' (a reminder of the appointment).
Recordatorio vs. Recuerdo
Mistake: “Me gusta este recordatorio de mis vacaciones.”
Correction: Me gusta este recuerdo de mis vacaciones.
anotación
Examples
Hice una anotación rápida en mi cuaderno para no olvidar la cita.
I made a quick note in my notebook so I wouldn't forget the appointment.
circular
seer-koo-LAHRθiɾkuˈlaɾ

Examples
El director envió una circular a todos los padres.
The principal sent a circular to all the parents.
Recibimos la circular sobre el nuevo horario.
We received the memo about the new schedule.
It's Feminine
When used as a noun meaning a memo or letter, it is always feminine: 'la circular'.
oficio
oh-FEE-syohoˈfiθjo

Examples
El juez envió un oficio a la policía para solicitar los informes.
The judge sent an official letter to the police to request the reports.
Tuvimos que responder al oficio del ayuntamiento rápidamente.
We had to respond to the town hall's official document quickly.
Formal Context
This meaning is very specific. You will only encounter 'oficio' used this way when dealing with bureaucracy, government, or legal matters.
Informal vs. Formal 'Memo'
Related Translations
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