ICA

1. Institute of Chartered Accountants (ICAEW of England and Wales; ICAI of Ireland)
2. Institute of Contemporary Arts
3. Invalid Care Allowance (now replaced by Carer's Allowance)

• Jack Ketch
• jackknife
• jackknifed
• jackknifes
• jackknifing
• jackknives
• jackman
• jackmen
• Jack Mormon
• Jack-of-all-trades
• Jack of Lent
• Jack-o'-lantern
• jack pine
• jack pines
• jack plane
• jack planes
• jack plug
• jack plugs
• jackpot
• jackpots
• Jack-priest
• Jack-pudding
• jack rabbit
• jack rabbits
• jack-rafter