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Colorado statewide
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Use this form to ask a Colorado court to legally change a minor child's name, giving the court the child's current and proposed name and the reason for the change.
Read the official instructions and gather the names, dates, identifiers, and supporting details they require.
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Strategic Brief
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The Warning
Check names, dates, signatures, and supporting documents before submitting the form.
Read the official instructions and gather the names, dates, identifiers, and supporting details they require.
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Agency
Colorado Judicial Branch
Form identifier
JDF 421
Estimated time
Varies
Verified
Jun 2026
Jurisdiction
Colorado statewide
PDF source
From the issuer: https://www.coloradojudicial.gov/sites/default/files/2024-12/JDF421.pdf
Docgle cached copy: https://api.staging.docgle.ai/documents/dae6dc33-9def-4d79-bf85-88d3d37a6912/original