Organisation vs Organization | Spelling & Examples

UK vs US updated on  January 10, 2024 4 min read
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. Five important differences are:


Difference

Rule

Examples

-or vs -our

In American English, many Latin-derived words end in -or.

In British English, these same words end in -our.

Behavior or behaviour
Labor or labour
Favor or favour
Favorite or favourite
Color or colour
Honor or honour

-er vs -re

In American English, some French, Latin, or Greek words end in -er.

In British English, these same words end in -re.

Theater or theatre
Center or centre
Meter or metre
Liter or litre
Saber or sabre
Fiber or fibre

-ize vs -ise

In American English, many Greek-derived words end in -yze or -ize.

In British English, these words end in -yse or -ise.

Realize or realise
Recognize or recognise
Analyze or analyse
Organisation or organization
Minimize or minimise
Finalize or finalise

-ed vs -t

In American English, most verbs are regular and form their past tense with the suffix -ed.

In British English, some of these verbs are irregular and form their past tense with the suffix -t.

Learned or learnt
Burned or burnt
Kneeled or knelt
Dreamed or dreamt
Smelled or smelt
Spelled or spelt

Single vs double consonant

In American English, many words are spelled with a single consonant.

In British English, these same words are spelled with a double consonant.

Modeling or modelling
Traveling or travelling
Canceled or cancelled
Labeled or labelled
Buses or busses
Focused or focussed

Do you want to know more about common mistakes, commonly confused words, rhetorical devices, or other language topics? Check out some of our other language articles full of examples and quizzes.


Common mistakes

Commonly confused words

Rhetoric

Hers or her’s

Aid vs aide

Malapropism

Truely or truly

Advice vs advise

Pun

Beck and call or beckon call

Council vs counsel

Extended metaphor

Jist or gist

Former vs latter

Simile

Despite of

Breathe vs breath

Dramatic irony


Frequently asked questions about organisation or organization

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 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.

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Julia Merkus

Julia has master's degrees in Linguistics and Language and speech pathology. Her expertise lies in grammar, language and speech disorders, foreign language learning, and child language acquisition.

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