Organisation vs Organization | Spelling & Examples

Organisation and organization are two ways of spelling the same noun, which refers to a business, the act of organizing, or a systematic arrangement. The spelling depends on the type of English you use.

  • In British English, “organisation” is standard, unless you follow Oxford style guidelines. In that case, you should use “organization.”
  • In American English, “organization” is the only correct spelling.

It’s important to choose one type of English and use it consistently. The QuillBot Grammar Checker can help you with this.

Examples: Organisation or organization in a sentence
The organisation/organization of the event required meticulous planning.

The organisation/organization provides aid to those affected by natural disasters.

As a manager, she oversaw the organisation/organization of the office.

The noun is often preceded by an adjective (e.g., “nonprofit organization/organisation”). The plural noun form is “organisations” or “organizations.”

Organised or organized

The spelling difference also applies to the past tense form of the verb organise or organize.

  • In British English, “organised” is standard, unless you follow Oxford style guidelines. In that case, you should use “organized.”
  • In American English, “organized” is correct.

Organised or organized can also be used as an adjective. In that case, it’s often preceded by an adverb that modifies it (e.g., “neatly organized/organised”).

Examples: Organised or organized in a sentence
Zoubeir looked at his well-organised/organized notes before the exam.

The goal was to teach students how to keep their finances organised/organized.

The library was very organised/organized, making it easy to find your favorite books.

Organising or organizing

The same spelling difference also applies to the present participle and the identical gerund form organising or organizing.

  • In British English, “organising” is standard, unless you follow Oxford style guidelines. In that case, use “organizing.”
  • In American English, “organizing” is correct.
Examples: Organising or organizing in a sentence
The committee was organising/organizing a community cleanup day.

The library staff spent hours organising/organizing the books on the shelves.

Timothy was busy organising/organizing his closet when his grandmother called.

Organiser or organizer

The same spelling difference applies to the related noun organiser or organizer, which can either refer to someone who arranges an activity or something that’s used to keep things in order.

  • In British English, “organiser” is standard, unless you follow Oxford style guidelines. In that case, use “organizer.”
  • In American English, “organizer” is correct.
Examples: Organiser or organizer in a sentence
The project organiser/organizer had a knack for keeping everyone on task.

The wedding planner served as the chief organiser/organizer.

The kitchen organiser/organizer made it easy to keep pots and pans in order.

Main differences between American and British English

American and British English are very similar, but there are a few main differences in spelling. Some differences are:

Difference Rule Examples
-or vs -our In American English, many Latin-derived words end in -or. Behavior or behaviour
Color or colour
Favor or favour
Flavor or flavour
Favorite or favourite
Honor or honour
Humor or humour
Labor or labour
Neighbor or neighbour
In British English, these same words end in -our.
-er vs -re In American English, some French, Latin, or Greek words end in -er. Center or centre
Fiber or fibre
Theater or theatre
In British English, these same words end in -re.
-ize vs -ise In American English, many Greek-derived words end in -yze or -ize. Analyze or analyse
Organization or organisation
Realize or realise
Recognize or recognise
In British English, these words end in -yse or -ise.
-ed vs -t In American English, most verbs are regular and form their past tense with the suffix -ed. Burned or burnt
Dreamed or dreamt
Kneeled or knelt
Learned or learnt
Smelled or smelt
Spelled or spelt
Spilled or spilt
In British English, some of these verbs are irregular and form their past tense with the suffix -t.
Single vs double consonant In American English, many words are spelled with a single consonant. Buses or busses
Canceled or cancelled
Counselor or counsellor
Focused or focussed
Labeled or labelled
Modeling or modelling
Traveling or travelling
In British English, these same words are often spelled with a double consonant.
Dropping vs retaining the “e” In American English, “e” is often dropped when forming a noun from a verb Acknowledgment or acknowledgement
Aging or ageing
Judgment or judgement
In British English, the “e” is often retained.
Different verb and noun spellings In American English, most words have identical verb and noun spellings. License or licence
Practice or practise
In British English, some words have different spellings for the verb and noun forms.
Other spelling differences There are many other spelling differences between the two English variants. Airplane or aeroplane
Aluminum or aluminium
Check or cheque
Cozy or cosy
Defense or defence
Dependent or dependant
Enrollment or enrolment
Fulfil or fulfill
Gray or grey
Jewelry or jewellery
Karat or carat
Mold or mould
Offense or offence
Pajamas or pyjamas
Program or programme
Skeptical or sceptical
Tire or tyre

Other interesting articles

If you want to know more about job applications, research, or idioms, make sure to check out some of our other articles with explanations and examples.

Frequently asked questions about organisation vs organization

Is it international organisation or organization?

Organisation and organization are two spellings of the same noun. The spelling depends on the type of English.

  • In British English, you write “international organisation,” unless you follow Oxford style guidelines. In that case, you write “international organization.”
  • In American English, you write “international organization.”

The same difference applies to words ending in -ize or -yze, such as recognize or recognise, analyze or analyse, finalize or finalise, minimize or minimise, and organize or organise.

It’s important to choose one type of English and use it consistently. The QuillBot Grammar Checker can help you with this.

Is it organization or organisation in Canada?

Organisation and organization are two spellings of the same noun. The spelling depends on the type of English.

  • In British English, you use “organisation.”
  • In American English, you use “organization.”

Canada largely follows the UK guidelines, but for words containing -iz-, they follow American guidelines. This means organization is standard.

The same difference applies to words that end in -ize or -yze, such as recognize or recognise, analyze or analyse, finalize or finalise, minimize or minimise, and organize or organise.

It’s important to choose one type of English and use it consistently. The QuillBot Grammar Checker can help you with this.

Is this article helpful?
Julia Merkus, MA

Julia has a bachelor in Dutch language and culture and two masters in Linguistics and Language and speech pathology. After a few years as an editor, researcher, and teacher, she now writes articles about her specialist topics: grammar, linguistics, methodology, and statistics.