Cigu may refer to:

• Sagittaria sagittifolia, known as Cigu in China, flowering plant in the family Alismataceae
• Cigu, Tainan, township in Tainan, Taiwan

• Phil Bester
• Phil Bevilacqua
• Phil Billings
• Philbin, Patrick
• Philbin, Stephen
• Philbin, William
• Phil Blitz
• Phil Bodmer
• Phil Bodner
• Phil Bogard
• Phil Booth (basketball)
• Phil Branch
• Philbrick, Stephen
• Phil Brigham
• Phil Brooks (footballer)
• Phil Brophy
• Phil Brown (American football)
• Phil Brown (athlete)
• Phil Brown (basketball coach)
• Phil Brown (runner)
• Phil Burgess
• Phil Burns
• Philby's rock partridge
• Phil Camm
• Phil Campbell (agricultural commissioner)