Spanish Phrase
Mi número de referencia es 12345.
Meaning
The sentence means 'My reference number is 12345.' It is a straightforward way to give an identifier that a company, bank, or service uses to locate your record.
When to use
Use this phrase when you need to provide a reference or account number in a formal or semi‑formal setting, such as speaking with customer service, filling out a form, or confirming an appointment.
✦Grammar Breakdown
Minúmerodereferenciaes12345
Possessive adjective (Mi)
Mi means 'my' and agrees in gender and number with the noun it modifies; it does not change form.
Noun phrase (número de referencia)
A compound noun where 'de' links two nouns, similar to 'reference number' in English.
Verb ser (es)
Ser is used for identity, definitions, and permanent characteristics; here it links the subject to its identifier.
Numbers as predicates
When a number follows ser, it is treated as a singular predicate, so the verb stays singular (es).
🗨In Conversation
¿Cuál es su número de referencia?
What is your reference number?
Mi número de referencia es 12345.
My reference number is 12345.
✕Common Mistakes
Mi número de referencia son 12345.
The verb must agree with the singular subject 'número', so use 'es' not 'son'.
Mi número de referencia es el 12345.
Do not add the definite article before the number unless the sentence explicitly requires it.
↔Alternatives
Mi referencia es 12345.
My reference is 12345.
El número de referencia es 12345.
The reference number is 12345.
Tengo el número de referencia 12345.
I have the reference number 12345.
Cultural Tip
In many Spanish‑speaking countries, reference numbers are often asked for in a formal tone. Keep your voice calm and clear, and repeat the digits slowly if the listener asks you to confirm. Avoid adding articles before the number (e.g., *el 12345*) unless the context specifically calls for it.