Qatar Family Law sets clear minimum ages for marriage: males must be at least 18 years old and females must be at least 16 years old before a marriage contract can be entered into (Article 17). A marriage attestator or notary is legally prohibited from authenticating any marriage where either party is below these ages.
For marriages involving minors below these thresholds, Article 17 indicates that any such marriages require specific judicial oversight and will not be routinely authenticated. Additionally, Article 14 requires that both parties be of sound mind and maturity for a marriage contract to be valid.
Expat families should be aware that even if a marriage involving someone under these ages might be considered valid in another country, Qatari authorities will apply these local standards when asked to authenticate or register the marriage in Qatar. If you are unsure whether your marriage or a family member's marriage will be recognised, consult a local family law attorney who can advise on cross-border recognition issues.
This is general legal information, not legal advice. For advice on your specific situation, consult a lawyer licensed in Qatar.