Last updated: 5 August 2026.
Quick answer. Under Spanish law it is lawful to record a conversation in which you yourself take part, because the speaker has voluntarily addressed you and remains responsible for what they say. What is always unlawful is recording a conversation between third parties: that breaches the fundamental right to secrecy of communications in Article 18.3 of the Spanish Constitution. A party’s own recording may also be admitted as evidence in court provided there is no provocation, deceit or coercion, the recorder participates in the conversation and, if it takes place in a private setting, the owner has consented.
The massive emergence of mobile devices and the versatility of functions that these devices offer, has incorporated, among many others, a new habit of social behavior: Recording. Whether it is an exhibition, call, or declaration; recording is a capability that is increasingly accessible, effortless and is therefore used more frequently.
The act of recording a conversation does not escape these new faculties. Whether as a simple record, or as an eventual means of proof, the truth is that even today it is unclear as to whether it is lawful to record a conversation or whether it could lead to negative consequences.
Before addressing the primary issue regarding the legality of recordings, it is important to understand that there are different types of recordings. The legality of which differs depending on whether the recording is one’s own or from a third party.
<< Own Audio Recordings vs Foreign Audio Recordings >>
Thus, recordings are classified as either one’s own or those of others. An own recording is classified as one that is made when the person is inside the conversation, while recordings of others are classified as those that have been recorded by third parties that do not belong to the conversation.
From the legal point of view, it is valid to record a conversation as long as it is a recording of one’s own, that is, whoever is recording is also an active subject and participant in said recording. The validity of this type of recording of conversation lies in the fact that the person who publicizes the conversation is also the person who issued it, and the person that is recorded has voluntarily agreed to have that contact, understanding that they are responsible for the expressions and content within the conservation.
On the contrary, the recordings of others will always be illegal because they violate the Fundamental Right to the Secrecy of Communications, established in Article 18.3 of the Spanish Constitution. Since, the unauthorized third party has interfered with the message and has been made aware of the content of the conversation that other people are discussing.
Is a recording a valid test?
Intimately related to the question in regards to the validity of recordings, another question arises. Can these recordings be used as a means of proof of defense in a trial? Jurisprudentially, the courts admit recordings as a means of proof as long as a series of requirements are met:
- That there is no provocation, deceit or coercion from the subject who records.
- That the subject who records plays an active part of the conversation, being a participant in it.
- That the conversation be recorded in a public place.
- If the conversation is recorded in a private place, there is authorization or consent from the owner.
Even if all of these requirements are met, normally, the opposition will try to use myriad of arguments to annul this means of proof. One of the most frequent allegations is often the breach of data protection rules — today the General Data Protection Regulation (Regulation (EU) 2016/679, GDPR) and Organic Law 3/2018 (LOPDGDD) — for not having obtained the necessary consent for the processing of the personal data obtained in the recording. That being said, under Article 6 of the GDPR consent is only one of several lawful bases for processing: the processing of personal data is also lawful when it is necessary for the purposes of a legitimate interest pursued by the controller. Which in this case, is in the need to prove the validity of a conversation in a judicial proceeding. Thus, the recording, if submitted before trial and accepted by the court can be used as a means of proof during trial.
Conclusion
In conclusion, a conversation can be recorded as long as the subject who records it is part of it, and in addition, this recording can also be presented as a means of proof in a judicial proceeding if the requirements cited above are met.
For advice applied to your case, see our Criminal Proceedings practice area.
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Frequently asked questions
Yes, provided the person recording is a participant in the conversation. Recording a conversation between third parties in which you take no part is always unlawful, as it breaches the fundamental right to secrecy of communications enshrined in Article 18.3 of the Spanish Constitution.
Spanish case law accepts that a participant may record their own conversation, because the other speaker voluntarily addressed them and remains responsible for the content of what they said. The prohibition applies to third parties who intercept communications they are not part of.
Yes, the courts admit a party’s own recordings as evidence if certain requirements are met: no provocation, deceit or coercion by the person recording; active participation of the recorder in the conversation; and, if recorded in a private place, the consent of its owner. If the court accepts the recording when tendered, it may be relied upon at trial.
It is a frequent objection, but data protection rules exempt processing from the consent requirement where it serves a legitimate interest. Proving the content of a conversation in judicial proceedings is treated as such a legitimate interest, so this objection does not normally defeat the admissibility of a party’s own recording.
Yes, always. A recording made by someone who is not a participant in the conversation infringes the right to secrecy of communications under Article 18.3 of the Spanish Constitution, because the unauthorised third party has interfered with a communication between other people, and such recordings are unlawful.
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