Reindeer vs Reindeers: Which Is Correct
Reindeer or reindeers: which is correct? The correct plural is reindeer, with no change at all. One reindeer, two reindeer, and a whole herd of reindeer all use the same word. The form reindeers with an s is listed as a secondary plural in some dictionaries, but it is rare, and standard writing avoids it. Test your sentence with our free Grammar Checker and Spelling Quiz, and use the zero plural rule below when the s feels tempting.
Reindeer belongs to a small club of words that never change in the plural, along with deer, sheep, fish, and moose. The pattern comes from the history of the word: reindeer grew from Old Norse words for a reindeer animal, and like deer it kept the old habit of using one form for one animal and for many. Christmas songs and stories use the zero plural every time, which is why “eight tiny reindeer” sounds right and “eight tiny reindeers” sounds wrong to most ears. Our plural of hippopotamus guide shows another animal word with a surprising plural, and the same check the dictionary habit helps there.
Quick answer
Use reindeer for one animal and for many animals. Do not add an s in everyday writing, in school work, or in stories. Use reindeers only if you write about different species or subspecies in a science text, and even there reindeer is the safer choice.
Memory trick: Reindeer ends in deer, and deer never takes an s, so reindeer never takes one either. Think “one deer, two deer, one reindeer, two reindeer” and the plural stays still.
When to use reindeer
Use reindeer for the singular and for the plural, in any sentence about the Arctic deer with wide antlers. The animal is Rangifer tarandus, a species that lives across the far north of Europe, Asia, and North America, where it is also called caribou. Both male and female reindeer grow antlers, which is unusual among deer, and herds migrate huge distances each year. Cambridge Dictionary lists the plural as reindeer, and its example sentence is “Santa Claus travels in a sleigh pulled by reindeer”. Oxford Learner’s Dictionaries’ reindeer entry lists the plural as reindeer or reindeers, with reindeer as the first and standard form.
✓ A reindeer crossed the frozen lake at dawn.
✓ Three reindeer pulled the sleigh through the snow.
✓ The herd of reindeer moved south for the winter.
✓ Santa’s reindeer wait on the roof on Christmas Eve.
✓ We saw ten reindeer grazing near the village.
✓ A single reindeer can pull a loaded sled.
Numbers and counting words never change the form. Write “one reindeer”, “five reindeer”, “many reindeer”, and “a herd of reindeer”, and the word stays exactly the same each time. The verb and the rest of the sentence do the work of showing singular or plural: “one reindeer is grazing” but “five reindeer are grazing”. Our heros or heroes guide shows another plural that trips writers, and the same number test helps there.
✓ One reindeer is grazing by the fence.
✓ Five reindeer are grazing by the fence.
✓ Many reindeer live in the Arctic tundra.
✓ A herd of reindeer crossed the road.
Reindeer also works in compounds and in fixed phrases without any change. Reindeer moss, reindeer herding, and reindeer sleigh all keep the base form, and the Christmas phrase “all the reindeer” needs no s either. The word is stable in every position, which makes it one of the easiest plurals to master once you know the rule.
When reindeers appears
The form reindeers appears in a few dictionaries as a second plural, and it has one narrow use: talking about different kinds of reindeer in a science text. Wiktionary notes that reindeers can name several species, subspecies, or other groupings of the animal, in the same way that fishes can name several species of fish. Outside that narrow use, reindeers is best avoided, because readers and teachers will read it as an error, and the standard plural covers every normal sentence.
✓ The study compared the diets of several reindeers in the biology sense. (rare, scientific)
✓ The paper lists two reindeers as separate subspecies. (rare, scientific)
✗ We saw five reindeers in the snow. (wrong in normal writing)
✓ We saw five reindeer in the snow.
Even in science writing, many authors still write reindeer for the plural and let the context show that several groups are meant. The regular s plural is listed, not recommended, and no style guide asks for it. If you are writing a school essay, a story, a card, or a blog post, reindeer is the only form you need. Our leafs or leaves guide shows another word where the dictionary lists a rare form that everyday writers should skip, and the same advice holds here.
✓ The class wrote about reindeer in the Arctic.
✓ The card showed Santa and his reindeer.
✓ The zoo cares for six reindeer in winter.
One more caution: reindeers also appears as the third person verb form, as in “he reindeers”, meaning he herds reindeer, but that use is so rare that most readers will never meet it. Do not let that verb form push you toward using reindeers as a plural. The noun plural is reindeer, full stop.
The tricky exceptions
Reindeer vs caribou
Reindeer and caribou are the same species, Rangifer tarandus, with different names in different places. In Europe and Asia the animal is called a reindeer, and herds there are often semi domesticated, kept by herders for transport, milk, and meat. In North America the wild animal is called a caribou, and the name reindeer is used for the domesticated herds and for Santa’s team. The plural rule is the same for both names in practice, and caribou also keeps one form for singular and plural.
✓ Caribou migrate across the Canadian tundra.
✓ Sami herders keep reindeer in northern Norway.
Santa’s nine reindeer
Santa’s team has nine reindeer, and every name in the list keeps the zero plural rule in the sentence around it. Dasher, Dancer, Prancer, Vixen, Comet, Cupid, Donner, and Blitzen come from the 1823 poem “A Visit from St. Nicholas”, and Rudolph joined the team in the 1939 story by Robert L. May. Children learn the song with “all of the other reindeer”, and that line is a perfect model: no s, even with nine animals in the air.
✓ Rudolph led all the other reindeer through the fog.
✓ Dasher and Dancer are two of Santa’s nine reindeer.
The elves and reindeer trap
Christmas writing pairs reindeer with elves, and the two plurals follow opposite rules. Elf becomes elves, with the f turning to ves, while reindeer stays reindeer. The common error is to regularise both at once and write “elfs and reindeers”, which gets both words wrong. Remember the pair as a set: elves change, reindeer stay. Our calfs or calves guide shows the same f to ves change for another word, and the same check saves you there.
✓ All the elves and reindeer waited by the sleigh.
✗ All the elfs and reindeers waited by the sleigh. (wrong)
Deer, sheep, and the zero plural family
Reindeer is one of several animal words that keep the same form in the plural. Deer, sheep, moose, fish, and swine all behave the same way, and they come from old English roots that never added an s. The pattern is a good memory aid: if the word ends in the deer family sound, check for a zero plural before you add an s. Fish is the closest cousin, because fishes exists for different species, just like reindeers exists for different kinds of reindeer, and in both cases the plain form is the everyday answer.
✓ One sheep, two sheep, and a whole flock.
✓ One deer, two deer, and a herd in the field.
✓ One moose, two moose, and no extra s.
Reindeer vs reindeers at a glance
| Form | Use | Status | Example |
|---|---|---|---|
| reindeer | Singular | Correct | one reindeer |
| reindeer | Plural, normal | Correct | five reindeer |
| reindeers | Plural, species | Rare, scientific | two reindeers as subspecies |
| reindeers | Plural, everyday | Avoid | Do not use it |
| caribou | Same species | Correct | wild caribou |
Quick practice
Choose the correct form for each sentence:
- We saw three ___ near the lake. (reindeer / reindeers)
- One ___ crossed the frozen river. (reindeer / reindeers)
- All the elves and ___ waited by the sleigh. (reindeer / reindeers)
- A herd of ___ moved south for winter. (reindeer / reindeers)
Answer key:
- 1. reindeer (the plural never changes)
- 2. reindeer (the singular form)
- 3. reindeer (elves change, reindeer stay)
- 4. reindeer (a herd takes the same form)
Frequently Asked Questions
What is the plural of reindeer?
The plural of reindeer is reindeer. One reindeer, two reindeer, and a herd of reindeer all use the same word.
Is reindeers ever correct?
Reindeers is listed as a rare second plural for different species in science texts, but everyday writing should use reindeer.
Are reindeer and caribou the same animal?
Yes, reindeer and caribou are the same species, Rangifer tarandus, with different names in different regions.
Final Thoughts
Reindeer is the plural of reindeer, and the word never changes, whether you count one animal or a whole herd pulling a sleigh. Reindeers exists only as a rare scientific plural for different kinds, and everyday writing should leave it alone. Remember the deer in the middle of the word, remember that elves change while reindeer stay, and let Santa’s nine reindeer be your model sentence. Once the zero plural rule clicks, the extra s will never sneak into your Christmas cards or your essays again.









