Louise Allen may refer to:

• Louise Allen (novelist) (born 1949), British writer of romance novels
• Louise Allen (tennis) (born 1962), American tennis player
• A pseudonym of the English singer and actress Alice May (1847–1887)

• Nishida's theorem
• Nishida Tatsuo
• Nishida theorem
• Nishi District, Hokkaido
• Nishi District, Hokkaidō
• Nishi-Eifuku Station
• Nishi-Ei Station
• Nishi-Fujiwara Station
• Nishigaoka National Stadium
• Nishigunma District, Gunma
• Nishi-Hanyu Station
• Nishi-Hanyū Station
• Nishihara (disambiguation)
• Nishi-Hazu Station
• Nishihira Kosei
• Nishi-Hitoyoshi Station
• Nishi Inaba Prefectural Natural Park
• Nishiizu, Shizuoka
• Nishi-Juhatchome Station
• Nishi-Juitchome Station
• Nishi Jūhatchōme Station
• Nishi-Jūhatchōme Station
• Nishi Jūitchōme Station
• Nishi-Jūitchōme Station
• Nishi Kanjiro