Paul Singer may refer to:

• Paul Singer (politician) (1844–1911), German politician, co-leader of the SPD
• Paul Singer (economist) (1932–2018), Austrian-born Brazilian economist and scholar
• Paul Singer (businessman) (born 1944), American founder of hedge fund Elliot Associates

• Susan Aho
• Susana Hurtado Vallejo
• Susan Akers
• Susan Alamo
• Susan Alberti
• Susan Alberts
• Susan Alexis Collins
• Susan Allen
• Susan Allen (musician)
• Susana Lopez Navia
• Susana López Charreton
• Susana López Navia
• Susana (magazine)
• Susana Manzanares
• Susan Amara
• Susana March
• Susana Martinez-Conde
• Susana Martínez
• Susana (Mexican film)
• Susana Monreal Ávila
• Susana Muñiz
• Susana (name)
• Susan Anbeh
• Susan Anderson
• Susan Anderson (psychotherapist)