PYD or pyd may refer to:
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"PYD" (song), a 2013 single by Justin Bieber
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Democratic Union Party (Syria)
The Democratic Union Party ( ku, Partiya Yekîtiya Demokrat (PYD) ; ar, حزب الاتحاد الديمقراطي, translit=Ḥizb al-Ittiḥad al-Dimuqraṭiy; syc, ܓܒܐ ܕܚܘܝܕܐ ܕܝܡܩܪܐܛܝܐ, translit=Gabo d'Ḥuyodo Demoqraṭoy ...
(''Partiya Yekîtiya Demokrat''), a Kurdish Syrian political party
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Pyrin domain
A pyrin domain (PYD, also known as PAAD/DAPIN) is a protein domain and a subclass of protein motif known as the death fold, the 4th and most recently discovered member of the death domain superfamily (DDF). It was originally discovered in the pyr ...
(PYD), or the protein domain
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Positive youth development
Positive youth development (PYD) programs are designed to optimize youth developmental progress. ''Youth.gov'' states that "PYD is an intentional, prosocial approach that engages youth within their communities, schools, organizations, peer groups, ...
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.pyd, a file extension for the Python programming language
{{disambiguation