Syd is a diminutive form (and hypocorism) of Sydney.

Notable people with the name include:

• Syd Barrett, the late British singer and musician, formerly of Pink Floyd
• Syd Eru, New Zealand rugby league footballer of the 1990s
• Syd Lawrence, the founder and leader of the Syd Lawrence Orchestra big band
• Sydney Loren Bennett, an American singer-songwriter, known professionally as "Syd"
• David "Syd" Lawrence, a former English cricketer
• Syd Little, an English comedian and straight man to Eddie Large in the double act Little and Large
• Syd'quan Thompson, the leader of the Cal Golden Bears secondary corps

• Portjengrat
• Port Jeremie
• Port Jersey
• Port Jersey Marine Terminal
• Port Johnson, New Jersey
• Port Johnston Coal Docks
• Port joli
• Port Kaituma airstrip shootings
• Port Kar
• Port Keats Airfield
• Port Keats, Northern Territory
• Port Keewaydin, Ontario
• Port Kells
• Port Kells, British Columbia
• Port Kells (Surrey)
• Port Kells, Surrey
• Port Kembla Blacks
• Port Kembla North railway station, New South Wales
• Port Kembla railway station, New South Wales
• Port Kennedy Bone Cave
• Port Kennedy, Pennsylvania
• Port Kennedy, WA
• Port Kent and Hopkinton Turnpike
• Port Kent - Hopkinton Turnpike
• Port Kent – Hopkinton Turnpike