Cadbury has introduced many variants to the original Creme Egg, including:
Border Creme Eggs.
The first variant, wrapped in various colours of tartan foil and containing chocolate fondant.
Introduced as "Fry's Border Creme Eggs" in 1970, rebranded as "Cadbury Border Creme Eggs" in 1974 and discontinued in 1981.

Mini Creme Eggs (bite-sized Creme Eggs)
Caramel Eggs (chocolate egg with a caramel filling), launched in 1994
Caramilk Egg (Canadian market only)
Mini Caramel Eggs (bite-sized Caramel Eggs)
Chocolate Creme Eggs (chocolate fondant filling), introduced in 1999
Orange Creme Eggs (Creme Eggs with a hint of orange flavour)
'Berry' Creme Eggs (magenta wrapper and pink fondant, sold circa 1987 in Australia)
Mint Creme Eggs (green "yolk" and mint flavour chocolate)
Dairy Milk with Creme Egg bars
Creme Egg Fondant in a Narrow Cardboard Tube (limited edition)
Creme Egg ice cream with a fondant sauce in milk chocolate
Dream Eggs (New Zealand).
White chocolate with white chocolate fondant filling.
Discontinued in 2010.

Cadbury McFlurry  (British, Irish, Canadian and Australian McDonald's only) McFlurry soft serve mix with Creme Egg & chocolate filling.
In the UK, it is currently released as part of McDonald's' Monopoly promotions.

Creme Egg Twisted (Britain, Ireland, Australia and Canada) Available all year round.
It was introduced to Australia in 2010 but was quickly discontinued.

Holiday Ornament Creme Egg
Mad About Chocolate Egg (Australia and New Zealand).
Purple wrapper, milk chocolate with chocolate fudge filling.
Discontinued in 2010.

Creme Egg Pots Of Joy - melted Cadbury milk chocolate with a fondant layer
Screme Egg Pots Of Joy - melted Cadbury milk chocolate but with a layer of Screme Egg fondant
Creme Egg Layers Of Joy - A layered sharing dessert with Cadbury milk chocolate, chocolate mousse, chocolate chip cookie and fondant dessert with a creamy topping.

Peppermint Egg (New Zealand).
Discontinued in 2010.

Giant Creme Eggs, a thick chocolate shell with white and caramel fondant filling.
Manufactured in North America.
Discontinued in 2006.

Creme Egg Splats - fried egg shaped pieces of milk chocolate filled with fondant.

Screme Egg - traditional milk chocolate shell with a white and green fondant center - available for Halloween
Screme Egg Minis - Mini version of the Screme Egg - available for Halloween
Fudgee-O Egg (Canada).
 Introduced at the start of 2015.
 Filled with a fudge creme centre.

Oreo Cream Egg (Canada).
Introduced in 2016.
Filled with a white cream centre containing Oreo cookie crumbs.

Ghost Egg - Same as normal Creme Egg, but without the "yolk".

White Chocolate Creme Egg - Creme Egg, but with white chocolate replacing the milk chocolate.
Released in 2018 as part of a UK promotion.

Other products
Jaffa Egg (New Zealand) Dark chocolate with orange filling
Marble Egg (New Zealand) Dairy Milk and Dream Chocolate swirled together
Caramilk Egg – Manufactured in New Zealand, a mixture of caramel and white chocolate with a creamy centre of the same flavour.

Chips Ahoy!
Egg (Canada).
Introduced in 2017.
Filled with a chocolate chip cookie dough centre.
Cadbury has introduced many variants to the original Creme Egg, including:
Border Creme Eggs. The first variant, wrapped in various colours of tartan foil and containing chocolate fondant. Introduced as "Fry's Border Creme Eggs" in 1970, rebranded as "Cadbury Border Creme Eggs" in 1974 and discontinued in 1981.
Mini Creme Eggs (bite-sized Creme Eggs)
Caramel Eggs (chocolate egg with a caramel filling), launched in 1994
Caramilk Egg (Canadian market only)
Mini Caramel Eggs (bite-sized Caramel Eggs)
Chocolate Creme Eggs (chocolate fondant filling), introduced in 1999
Orange Creme Eggs (Creme Eggs with a hint of orange flavour)
'Berry' Creme Eggs (magenta wrapper and pink fondant, sold circa 1987 in Australia)
Mint Creme Eggs (green "yolk" and mint flavour chocolate)
Dairy Milk with Creme Egg bars
Creme Egg Fondant in a Narrow Cardboard Tube (limited edition)
Creme Egg ice cream with a fondant sauce in milk chocolate
Dream Eggs (New Zealand). White chocolate with white chocolate fondant filling. Discontinued in 2010.
Cadbury McFlurry  (British, Irish, Canadian and Australian McDonald's only) McFlurry soft serve mix with Creme Egg & chocolate filling. In the UK, it is currently released as part of McDonald's' Monopoly promotions.
Creme Egg Twisted (Britain, Ireland, Australia and Canada) Available all year round. It was introduced to Australia in 2010 but was quickly discontinued.
Holiday Ornament Creme Egg
Mad About Chocolate Egg (Australia and New Zealand). Purple wrapper, milk chocolate with chocolate fudge filling. Discontinued in 2010.
Creme Egg Pots Of Joy - melted Cadbury milk chocolate with a fondant layer
Screme Egg Pots Of Joy - melted Cadbury milk chocolate but with a layer of Screme Egg fondant
Creme Egg Layers Of Joy - A layered sharing dessert with Cadbury milk chocolate, chocolate mousse, chocolate chip cookie and fondant dessert with a creamy topping.
Peppermint Egg (New Zealand). Discontinued in 2010.
Giant Creme Eggs, a thick chocolate shell with white and caramel fondant filling. Manufactured in North America. Discontinued in 2006.
Creme Egg Splats - fried egg shaped pieces of milk chocolate filled with fondant.
Screme Egg - traditional milk chocolate shell with a white and green fondant center - available for Halloween
Screme Egg Minis - Mini version of the Screme Egg - available for Halloween
Fudgee-O Egg (Canada).  Introduced at the start of 2015.  Filled with a fudge creme centre.
Oreo Cream Egg (Canada). Introduced in 2016. Filled with a white cream centre containing Oreo cookie crumbs.
Ghost Egg - Same as normal Creme Egg, but without the "yolk".
White Chocolate Creme Egg - Creme Egg, but with white chocolate replacing the milk chocolate. Released in 2018 as part of a UK promotion.
Other products
Jaffa Egg (New Zealand) Dark chocolate with orange filling
Marble Egg (New Zealand) Dairy Milk and Dream Chocolate swirled together
Caramilk Egg – Manufactured in New Zealand, a mixture of caramel and white chocolate with a creamy centre of the same flavour.
Chips Ahoy! Egg (Canada). Introduced in 2017. Filled with a chocolate chip cookie dough centre.
Cadbury Creme Egg