All Onix cards

Browse all 30 Onix cards indexed in TCG Companion, across 28 sets. Tap any card to open live eBay listings, or scan a card in the app to see its current market value and every graded tier.

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Collector highlights

Most expensive Onix cards

The rarest and most valuable Onix cards, ranked by current market price.

  1. #1 Onix #3 from Southern Islands

    Onix

    Southern Islands · #3

    $51.96
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  2. #2 Brock's Onix #21 from Gym Heroes

    Brock's Onix

    Gym Heroes · #21

    $8.07
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  3. #3 Onix #98 from Aquapolis

    Onix

    Aquapolis · #98

    $7.27
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  4. #4 Onix #9 from McDonald's Collection 2019

    Onix

    McDonald's Collection 2019 · #9

    $4.99
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  5. #5 Onix-GX #36 from Hidden Fates

    Onix-GX

    Hidden Fates · #36

    $3.14
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  6. #6 Onix #42 from FireRed & LeafGreen

    Onix

    FireRed & LeafGreen · #42

    $2.90
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  7. #7 Onix #69 from Neo Genesis

    Onix

    Neo Genesis · #69

    $1.87
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  8. #8 Onix #69 from Team Rocket Returns

    Onix

    Team Rocket Returns · #69

    $1.86
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Ungraded prices · Updated . Ungraded cards; prices vary by condition and finish.

Onix GX cards

1 card, newest first.

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Other Onix cards

29 cards, newest first.

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Onix card FAQ

What is the most expensive Onix card?

The most valuable Onix card is Onix #3 from Southern Islands, at $51.96 (ungraded). It is followed by Brock's Onix from Gym Heroes ($8.07) and Onix from Aquapolis ($7.27).

How many Onix cards are there?

There are 30 Onix cards across 28 sets. That includes 1 GX cards.

What was the first Onix card?

The first Onix card was Onix #56 from Base, released January 9, 1999.

What is the newest Onix card?

The newest Onix card is Onix #70 from Mega Evolution, released September 26, 2025.

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Sets with Onix cards

Mega Evolution · Paradox Rift · Scarlet & Violet 151 · Pokémon Go · Fusion Strike · Battle Styles · Cosmic Eclipse · McDonald's Collection 2019 · Hidden Fates · Unified Minds · Lost Thunder · Celestial Storm · Evolutions · Plasma Freeze · HS—Unleashed · Stormfront · Diamond & Pearl · Unseen Forces · Team Rocket Returns · FireRed & LeafGreen · Sandstorm · Aquapolis · Legendary Collection · Southern Islands · Neo Genesis · Gym Heroes · Base Set 2 · Base

Related Pokémon cards

Cloyster · Gastly · Haunter · Gengar · Drowzee · Hypno · Krabby · Kingler

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Onix card value

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