Donald Cochrane may refer to:

• Donald Cochrane (politician) (1904–1985), Australian politician
• Donald Cochrane (economist) (1917–1983), Australian econometrician
• Donald Alexander Cochrane, Canadian composer
• Donald T. Cochrane (1906–1969), Canadian politician in the Legislative Assembly of New Brunswick

• Alkali Act 1874
• Alkali-aggregate reaction
• Alkalibacillus
• Alkalibacter
• Alkalibaculum
• Alkali basalts
• Alkali Bluegrass
• Alkali bluegrass
• Alkali Canyon Formation
• Alkali-carbonate reaction
• Alkali cellulase
• Alkali-chlorine process
• Alkali cordgrass
• Alkali Cordgrass
• Alkali crucifer
• Alkali, &c. Works Regulation Act 1881
• Alkali, &c. Works Regulation Act 1892
• Alkali, &c. Works Regulation Act 1906
• Alkali Denaturation Test
• Alkalides
• Alkali desertparsley
• Alkali Feldspar
• Alkali feldspar granite
• Alkaliflexus
• Alkali fly