There are five basic elements used in the Pagan belief system, or at least in the system mostly used in Paganism. But there are many religions which share the use of elements in their religion and ceremonies, and not all of them use the same elements/names.
I have compiled a list of the best known and most widely used ones for you to check out.

Classical Astrological includes 4:
Earth, Air, Fire, Water.
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Pagan generally includes 5:
Earth, Air, Fire, Water plus Spirit.
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Neo-Paganism has 5:
Earth, Air, Fire, Water and Lightning.
Divided into two groups.
Light:
Earth - Gems/Land, Air - Air, Fire - Hearth, Water - Rain, Lightning - Life.
Dark: Earth - Earthquake, Air - Tornado, Fire - Volcanic Eruption, Water - Deluge, Lightning - Thunderstorm.
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Ancient Celtic belief includes 3 realms:
Land, Sea, and Sky.
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Faerie Tradition includes 7:
Earth, Air, Fire, Water, Spirit, Above, Below.
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Chinese Tradition has 5:
Earth, Wood, Water, Fire, Metal.
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Japanese Tradition has 5:
Earth, Water, Fire, Wind, and Void
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Hindu Tradition has 5
Earth, Water, Fire, Air/Wind, and Spirit/Akasha/Ether
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Buddism has 4 primary properties:
cohesion (water), solidity or inertia (earth), expansion or vibration (air) and heat or calorific content (fire).
And 4 secondary properties:
color, smell, taste, and nutriment.
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The philosophy of the Chakras has 7:
Sabasrara (Crown): Thought/Space , Anja (Third Eye): Light/Time , Vishbuddha (Throat): Ether/Sound, Anabata (Heart): Air, Manipura (Navel): Fire, Svadhistbana (Sacral): Water, Muladhara (Root): Earth.
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Tibetan Philosophy has 5:
Earth, Air, Fire, Water and Space.
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I thought this information was interesting and wondered if you might too. I hope so.

I didn't know there were so many different ones. Or that some of them would be as different to the ones I'm getting used to.
Thanks for this Elvin.