Swimwear & Beachwear

Sun, sand and swimsuits for little ones
60 items
OLAIAN SWIM SHORTS 100 KATY BLACK
OLAIAN SWIMMING SHORTS 100 KATY PINK
OLAIAN SWIMMING SHORTS 100 KATY COCO
OLAIAN Girl's swim shorts - 100 Katy rainbow stripes turquoise
OLAIAN Girl's swim shorts - 100 Katy shiso black
OLAIAN girls swimming shorts KATY khaki
Gallery item 1 out of 6
OLAIAN SWIM SHORTS 100 KATY BLACK
Rate: 4.7 stars, 224 votes
6 colors
£6.99£12.99
OLAIAN Boy's swim shorts - 100 sky blue
OLAIAN Boy's swim shorts -100 navy blue
Gallery item 1 out of 2
OLAIAN Boy's swim shorts - 100 sky blue
2 colors
£5.99
OLAIAN SWIM SHORTS BOARDSHORT 900 - GREEN
OLAIAN BOARDSHORT SWIMMING SHORTS 900 BLACK
OLAIAN SWIM SHORTS BOARDSHORT 900 BLUE
Gallery item 1 out of 3
OLAIAN SWIM SHORTS BOARDSHORT 900 - GREEN
Rate: 4.3 stars, 65 votes
3 colors
£14.99£22.99
OLAIAN swim shorts 550 - blue
OLAIAN swim shorts 550 - purple
OLAIAN swim shorts 550 black green
OLAIAN Boy's swim shorts - 550 Softgeo blue
OLAIAN Boy's swim shorts - 550 Canopy orange
OLAIAN Swim shorts 550 offshore green
Gallery item 1 out of 6
OLAIAN swim shorts 550 - blue
Rate: 4.6 stars, 220 votes
6 colors
£9.99£14.99
OLAIAN Boy's swim shorts - 900 blue
OLAIAN Boy's swim shorts - 900 black and blue stripes
Gallery item 1 out of 2
OLAIAN Boy's swim shorts - 900 blue
2 colors
£24.99
OLAIAN Boy's swim shorts - 100 sign blue green
OLAIAN Boy's swim shorts - 100 banana blue
OLAIAN Boys' swim shorts -100 shadow red
OLAIAN Boy's swim shorts - 100 happysurf red
OLAIAN Boy's swim shorts - 100 Sign orange
OLAIAN Boy's swim shorts - 100 Tokyo sun turquoise
OLAIAN Boy's swim shorts - 100 shadow green
Gallery item 1 out of 7
OLAIAN Boy's swim shorts - 100 sign blue green
7 colors
£8.99
OLAIAN BOY'S SWIMMING SHORTS PALMITOS BLUE
OLAIAN boy's swimming shorts - black
Gallery item 1 out of 2
OLAIAN BOY'S SWIMMING SHORTS PALMITOS BLUE
Rate: 4.6 stars, 64 votes
2 colors
£7.99£10.99
OLAIAN Swim Shorts - navy blue
OLAIAN Swim Shorts - sky blue
OLAIAN Swim Shorts - Turquoise blue
Gallery item 1 out of 3
OLAIAN Swim Shorts - navy blue
Rate: 4.7 stars, 1225 votes
3 colors
£3.19£4.99
OLAIAN swim shorts 500 - beige
OLAIAN swim shorts 500 black pink
OLAIAN SWIM SHORTS 500 BLACK GREEN
OLAIAN SWIMMING WAVYWAVE SHORTS 500 BLUE
OLAIAN swim shorts 500 multicoloured
OLAIAN SWIM SHORTS 500 KHAKI
OLAIAN SWIMMING SHORTS 500 - BLUE/BLACK
OLAIAN SWIMMING SHORTS 500 - BLUE/CAMO
OLAIAN Boy's swim shorts - 500 zebra red purple
OLAIAN Boys' swim shorts - 500 Palmsand black
OLAIAN Boy's swim shorts - 500 brush lines blue
OLAIAN Boy's swim shorts - 500 Memphis green
OLAIAN SWIM SHORTS 500 ORANGE
OLAIAN SWIM SHORTS 500 BLUE RED
OLAIAN SWIM SHORTS 500 DARK BLUE
Gallery item 1 out of 15
OLAIAN swim shorts 500 - beige
Rate: 4.5 stars, 383 votes
15 colors
£7.99£15.99
OLAIAN swimming shorts 100 - yellow
OLAIAN swim shorts 100 - Turquoise
OLAIAN swimming shorts 100 - red
OLAIAN Kids’ swim shorts 100 - Green
OLAIAN Kids’ swim shorts 100 - striped turquoise
OLAIAN Kids’ swim shorts 100 - Blue/Red
Gallery item 1 out of 6
OLAIAN swimming shorts 100 - yellow
Rate: 4.7 stars, 672 votes
6 colors
£4.99£7.99
OLAIAN Black adventure swim shorts
OLAIAN Swimming Trunks blue yellow
OLAIAN SWIM SHORTS - KHAKI
OLAIAN Swim shorts - sunset
OLAIAN Swim Shorts - Bamboo Navy Blue
OLAIAN Swimming trunks sky blue navy blue
OLAIAN Boy's swim shorts - 100 surfcanvas green
OLAIAN Swim Shorts - Khaki
Gallery item 1 out of 8
OLAIAN Black adventure swim shorts
Rate: 4.7 stars, 627 votes
8 colors
£6.49£11.99
OLAIAN swim shorts/boardshort 900 black green
OLAIAN swim shorts/boardshort 900 black green
Rate: 4.3 stars, 50 votes
£19.99
ADIDAS Classic Badge of Sport Swim Shorts
ADIDAS Classic Badge of Sport Swim Shorts
ADIDAS Classic Badge of Sport Swim Shorts
ADIDAS Classic Badge of Sport Swim Shorts
Gallery item 1 out of 4
ADIDAS Classic Badge of Sport Swim Shorts
Rate: 5.0 stars, 1 votes
4 colors
Sold and shipped by adidas (UK) Limited (ADIDAS UK)
£18.00
ADIDAS Logo CLX Swim Shorts
ADIDAS Logo CLX Swim Shorts
Sold and shipped by adidas (UK) Limited (ADIDAS UK)
£23.00
SPEEDO Speedo Junior Essential Endurance Plus Aquashort – Navy
SPEEDO Speedo Junior Essential Endurance Plus Aquashort – Navy
Sold and shipped by theSwimmingShop
£13.20£15.40
SPEEDO Speedo Boys Essentials Watershorts - Black
SPEEDO Speedo Boys Essentials Watershorts - Black
Sold and shipped by theSwimmingShop
£15.40
ADIDAS adidas x Marvel's Avengers Swim Boxers
ADIDAS adidas x Marvel's Avengers Swim Boxers
Sold and shipped by adidas (UK) Limited (ADIDAS UK)
£23.00
ADIDAS adidas x Disney Mickey Mouse Swim Shorts
ADIDAS adidas x Disney Mickey Mouse Swim Shorts
Sold and shipped by adidas (UK) Limited (ADIDAS UK)
£25.00
ADIDAS adidas x Marvel's Avengers Swim Shorts
ADIDAS adidas x Marvel's Avengers Swim Shorts
Sold and shipped by adidas (UK) Limited (ADIDAS UK)
£25.00
ADIDAS 3-Stripes Swim Shorts
ADIDAS 3-Stripes Swim Shorts
ADIDAS 3-Stripes Swim Shorts
Gallery item 1 out of 3
ADIDAS 3-Stripes Swim Shorts
3 colors
Sold and shipped by adidas (UK) Limited (ADIDAS UK)
£23.00
ADIDAS Classic 3-Stripes Swim Jammers
ADIDAS Classic 3-Stripes Swim Jammers
Sold and shipped by adidas (UK) Limited (ADIDAS UK)
£23.00
ADIDAS Sportswear Wave Print CLX Swim Shorts Kids
ADIDAS Sportswear Wave Print CLX Swim Shorts Kids
Sold and shipped by adidas (UK) Limited (ADIDAS UK)
£23.00
SPEEDO Speedo Essential 13" Watershorts Junior, Black
SPEEDO Speedo Essential 13" Watershorts Junior, Black
Gallery item 1 out of 2
SPEEDO Speedo Essential 13" Watershorts Junior, Black
2 colors
Sold and shipped by SPEEDO INTERNATIONAL LIMITED
£16.49
ADIDAS Colourblock 3-Stripes Swim Boxers
ADIDAS Colourblock 3-Stripes Swim Boxers
Gallery item 1 out of 2
ADIDAS Colourblock 3-Stripes Swim Boxers
Rate: 5.0 stars, 1 votes
2 colors
Sold and shipped by adidas (UK) Limited (ADIDAS UK)
£18.00
ADIDAS Logo Print CLX Swim Shorts
ADIDAS Logo Print CLX Swim Shorts
Sold and shipped by adidas (UK) Limited (ADIDAS UK)
£23.00
ADIDAS adidas x Disney Mickey Mouse Swim Boxer
ADIDAS adidas x Disney Mickey Mouse Swim Boxer
Sold and shipped by adidas (UK) Limited (ADIDAS UK)
£23.00
SPEEDO Children’s Bathing Costume Essential Allover Aquashort
SPEEDO Children’s Bathing Costume Essential Allover Aquashort
Sold and shipped by ProSwimwear LTD
£13.99
SPEEDO Speedo Infant Digital Allover Aquashort
SPEEDO Speedo Infant Digital Allover Aquashort
Sold and shipped by ProSwimwear LTD
£11.00
SPEEDO Speedo Digital Allover Aquashort Swimsuits Junior
SPEEDO Speedo Digital Allover Aquashort Swimsuits Junior
Sold and shipped by ProSwimwear LTD
£11.00
ADIDAS Performance Big Bars Swim Boxers Kids
ADIDAS Performance Big Bars Swim Boxers Kids
Gallery item 1 out of 2
ADIDAS Performance Big Bars Swim Boxers Kids
2 colors
Sold and shipped by adidas (UK) Limited (ADIDAS UK)
£13.00
SPEEDO Speedo Essential 13" Watershorts Junior, Navy
SPEEDO Speedo Essential 13" Watershorts Junior, Red
Gallery item 1 out of 2
SPEEDO Speedo Essential 13" Watershorts Junior, Navy
2 colors
Sold and shipped by theSwimmingShop
£15.40
SPEEDO Speedo Junior Essential Endurance Plus Aquashort - Black
SPEEDO Speedo Junior Essential Endurance Plus Aquashort - Black
Sold and shipped by theSwimmingShop
£14.05
SPEEDO Speedo Boys Essentials 13" Watershorts - Navy
SPEEDO Speedo Boys Essentials 13" Watershorts - Navy
Sold and shipped by theSwimmingShop
£15.40
ADIDAS Sportswear Essentials Logo CLX Swim Shorts Kids
ADIDAS Sportswear Essentials Logo CLX Swim Shorts Kids
Gallery item 1 out of 2
ADIDAS Sportswear Essentials Logo CLX Swim Shorts Kids
2 colors
Sold and shipped by adidas (UK) Limited (ADIDAS UK)
£23.00
ADIDAS Finding Nemo Swim Shorts
ADIDAS Finding Nemo Swim Shorts
Sold and shipped by adidas (UK) Limited (ADIDAS UK)
£23.00
SPEEDO Speedo Essential 13" Watershorts Junior, Navy
SPEEDO Speedo Essential 13" Watershorts Junior, Red
SPEEDO Speedo Essential 13" Watershorts Junior, Black
Gallery item 1 out of 3
SPEEDO Speedo Essential 13" Watershorts Junior, Navy
3 colors
Sold and shipped by theSwimmingShop
From £15.40
REGATTA Boys Skander II Coral Swim Shorts (Bright Kiwi)
REGATTA Boys Skander II Coral Swim Shorts (Bright Kiwi)
Sold and shipped by Pertemba GB
From £8.49
REGATTA Childrens/Kids Skander II Tropical Swim Shorts (Navy)
REGATTA Childrens/Kids Skander II Tropical Swim Shorts (Navy)
Sold and shipped by Pertemba GB
£8.49
REGATTA Childrens/Kids Sergio Swim Shorts (Powder Blue/Navy)
REGATTA Childrens/Kids Sergio Swim Shorts (Fiery Red/Imperial Blue)
REGATTA Childrens/Kids Sergio Swim Shorts (Imperial Blue/Bright Kiwi)
REGATTA Childrens/Kids Sergio Swim Shorts (Rusty Orange/Blaze Orange)
Gallery item 1 out of 4
REGATTA Childrens/Kids Sergio Swim Shorts (Powder Blue/Navy)
4 colors
Sold and shipped by Pertemba GB
£7.99
REGATTA Boys Skander II Striped Swim Shorts (Lapis Blue)
REGATTA Boys Skander II Striped Swim Shorts (Lapis Blue)
Sold and shipped by Pertemba GB
£7.99
4.5/5 based on 5158 reviews collected online and in stores

Splish, splash!

Whether you're planning a summer holiday, booking swimming lessons for your toddler or just planning some fun family splash time at the local pool, our kids' swimwear range has everything you need. From pretty swimming costumes to practical swim shorts, we stock a wide range of swimwear for boys, girls and babies of all ages.

Each item in our range is designed to fit your child perfectly, offer excellent value for money and ensure they can bob about and practice strokes in total comfort. Shop now at Decathlon.