• {{flag|Ireland}} →  Ireland
• {{flag icon|Ireland}} →
• {{flag country|Ireland}} →  Ireland

• {{flag|Ireland|1783}} →  Ireland
• {{flag icon|Ireland|1783}} →

• {{flag icon|IRE}} →
• {{flag country|IRE}} →  Ireland
• {{flag|IRE}} →  IRE

This nation's naval flag is the same as its national flag, so Template:Naval produces the following:

• {{naval|Ireland}} →  Irish Naval Service
  

This template includes an air force ensign flag variant that can be used with Template:Air force:

• {{air force|Ireland}} →  Irish Air Corps
• {{flag icon|Ireland|air force}} →
  

This template includes a marine ensign flag variant that can be used with Template:Armed forces:

• {{Armed forces|Ireland}} →  Irish Defence Forces
• {{flag icon|Ireland|military}} →
  

This template includes an ensign flag variant that can be used with Template:Navy:

• {{navy|Ireland}} →  Irish Naval Service
• {{flag icon|Ireland|navy}} →
  

This template includes a coast guard ensign flag variant that can be used with Template:Coast guard:

• {{coast guard|Ireland}} →  Irish Coast Guard
• {{flag icon|Ireland|coast guard}} →
  

This template includes an army ensign flag variant that can be used with Template:Army:

• {{army|Ireland}} →  Irish Army
• {{flag icon|Ireland|army}} →

Please see the following related country_data templates:

• Template:Country data Republic of Ireland Republic of Ireland
• Template:Country data Southern Ireland Southern Ireland
• Template:Country data Kingdom of Ireland Kingdom of Ireland
• Template:Country data Lordship of Ireland Lordship of Ireland
• Template:Country data Irish Free State Irish Free State

This template is intended to be used for all-Ireland instances, usually resulting in a wikilink to Ireland (article about the island) instead of Republic of Ireland (article about the sovereign nation).

However, it is often convenient to use {{flag icon|Ireland}} and {{flag|Ireland}} instead of {{flag icon|Republic of Ireland}} and {{flag|Republic of Ireland}} respectively, so this template differs from the standard format in order to accommodate that usage. The alias parameter changes depending on whether or not a flag variant is used by the parent template call:

alias = {{#if:{{{variant|}}}|Ireland|Republic of Ireland}}

This results in

• {{flag|Ireland|1783}} →  Ireland (use for Ireland as part of United Kingdom of Great Britain and Ireland)
• {{flag|Ireland}} →  Ireland (use for current state)

Also, several sport-specific flag variants are maintained here, and these are automatically used by the respective sport team templates:

• {{fb|Ireland}} →  Ireland (football, 1882–1922)
• {{fh|Ireland}} →  Ireland (field hockey)
• {{rl|Ireland}} →  Ireland (rugby league)
• {{ih|Ireland}} →  Ireland (ice hockey) — all-Ireland team that uses the tri-colour
• {{idh|Ireland}} →  Ireland (indoor hockey)
• {{ru|Ireland}} →  Ireland (rugby union)
• {{cr|Ireland}} →  Ireland (cricket)
• {{quid|Ireland}} →  Ireland (quidditch)

The standard country code for the Republic of Ireland is IRL, so it can be used as an alias for Template:Country data Republic of Ireland. The non-standard country codes IRE and EIR are used as aliases for this template to provide similar convenience. For example:

• {{flag icon|IRL}} →
• {{flag icon|IRE|1783}} →
• {{flag icon|IRE|4prov}} →
• {{fb|IRL}} →  Republic of Ireland (links to Republic of Ireland national football team)
• {{fb|IRE}} or {{fb|EIR}} →  Ireland (links to Ireland national football team (1882–1950))

Do not use the IRL alias for all-Ireland sports team, and do not use the IRE/EIR aliases without a flag variant specified. The following examples should not be used.

• {{flag icon|IRE}} → (Works, but better to use the standard country code for IRL.)
• {{fh|IRL}} →  Ireland (Use {{fh|IRE}} instead)

Country_data templates are also available for each of the four traditional provinces of Ireland:

Template:Country data Connacht	Connacht
Template:Country data Leinster	Leinster
Template:Country data Munster	Munster
Template:Country data Ulster	Ulster