KSDN may refer to:

• KSDN (AM), a radio station (930 AM) licensed to Aberdeen, South Dakota, United States
• KSDN-FM, a radio station (94.1 FM) licensed to Aberdeen, South Dakota, United States

• Aminodeoxychorismate lyase
• Aminodeoxychorismate synthase
• Amino (disambiguation)
• Aminoethane
• Aminoethanoic acid
• Aminoethylethanolamine
• Aminoethylpiperazine
• Aminoff Award
• Aminoff medal
• Aminoff Medal
• Aminoff Prize
• Aminoglutethimide
• Aminogluthetimide
• Aminoglycoside antibiotic
• Aminoglycoside antibiotics
• Aminohydrolase
• Aminohydrolases
• Aminohydroxylation
• Aminoimidazole carboxamide ribonucleotide
• Aminoisobutryic acid
• Amino isobutyric acid
• Aminoisobutyric acids
• Amino lavulinic acid synthase
• Aminolevulinic acid hydrochloride
• Aminollah Hussein