Schouler is a surname. Notable people with the surname include:

• James Schouler (1839–1920), American lawyer and historian
• William Schouler (1814–1872), American journalist and politician

• Methyl DNA-base, 2-oxoglutarate:oxygen oxidoreductase
• Methyldopamine
• Methyldopate Hydrochloride
• Methyl (E)-3-(3,4-dihydroxyphenyl)prop-2-enoate
• Methylecgonone reductase
• Methylene bis(4-phenyl isocyanate)
• Methylene bridge
• Methylene cyclohexane
• Methylenecyclopropane
• Methylene cyclopropane
• Methylene cyclopropyl acetic acid
• Methylenedianiline
• Methylene dimethyl ether
• Methylenedioxyhydroxymethamphetamine
• Methylenedioxyisopropylamphetamine
• Methylenedioxymethylphentermine
• Methylenedioxypropylamphetamine
• Methylene diphenyldiisocyanate
• Methylene di-p-phenylene ester of isocyanic acid
• Methylene (disambiguation)
• Methylenediurea aminohydrolase
• Methylenediurea deaminase
• Methylenediurease
• Methylene green
• Methylene group