List of episodes by language/Welsh

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NOTE: Only a selection of episodes from seasons 4, 5, and 6 are dubbed into Welsh. There are no four or seven minute episodes from these seasons, and also no double-length episodes, except for "What Ever Happened to SpongeBob?," which is split into two parts.

№	Original title	Dubbed title	Title card	Airdates	Welsh season
Season 4: 2013
77	Gyrru'n Wallgo Driven Mad	Driven to Tears		January 8, 2013	3
	Bytheirio Brenhinol Royal Burial Ground	Rule of Dumb		January 1, 2013
79	Y Lleidr Llechwraidd The Stealth Thief	The Pink Purloiner		January 15, 2013
	Sulwyn Bach Little Squidward	Squid Wood		January 22, 2013
80	Y Dydd Gorau 'Rioed The Best Day Ever	Best Day Ever		January 29, 2013
	Gwm i Gyfaill Gum to Friend	The Gift of Gum		February 5, 2013
Season 5: 2012-2013
82	Cogydd Cynta'r Crancdy First Krusty Krab Cook	The Original Fry Cook		February 12, 2013	3
	Golau Nos Nightlight	Night Light		April 25, 2013
83	Haint yn y Pant Infection in the Pants	Fungus Among Us		May 2, 2013
84	Ysbiwyr Spies	Spy Buddies		May 9, 2013
85	Does Unman Fel Cartref No Place Like Home	New Digs		May 16, 2013
	Crancdy'n Gorn Krusty Krab a Horn	Krabs à la Mode		May 23, 2013
86	Dwrn o Boen Fist of Pain	Roller Cowards		May 30, 2013
	Abwydal-gi - Hip neu Sgip? Chum Bucket - Hip or Skip?	Bucket Sweet Bucket		June 6, 2013
87	Cariad y Moroedd Love of the Seas	To Love a Patty		June 13, 2013
	Sulwyn Llai Surbwch Squidward Less Killjoy	Breath of Fresh Squidward		June 20, 2013
88	Dawnsio Dan y Don Dancing Under the Don	Slimy Dancing		June 27, 2013
89	Y Sbynjdy The Spongey Krab	The Krusty Sponge		July 4, 2013
	Cenwch Gân Fel Padrig Sing Song As Patrick	Sing a Song of Patrick		September 5, 2013
90	Chwannen yn ei Chromen Flea in her Dome	A Flea in Her Dome		September 12, 2013
91	Cynllun Cyfnewid Cogydd Chef Exchange Scheme	Le Big Switch		September 19, 2013
94	Llygad Ddu Black Eye	Blackened Sponge		September 26, 2013
95	Ynys Haf Summer Island	The Inmates of Summer		October 3, 2013
	Gwiwer Gudd Hidden Squirrel	To Save a Squirrel
97	Crancdy'n Crwydro Spraying Crab	20,000 Patties Under the Sea			2
	Brwydr Pant y Bicini Bikini Bottom Battle	The Battle of Bikini Bottom
98	PwyBob Pabants, Rhan 1/2 WhoBob WhatPants, Part 1/2	What Ever Happened to SpongeBob?
	PwyBob Pabants, Rhan 2/2 WhoBob WhatPants, Part 2/2			November 1, 2012
99	Spynjgewri Sponge Giants	SpongeHenge
100	Byrgyr Sur Pant y Bicini Burger Sur Bikini Bottom	Banned in Bikini Bottom
	Smonach Stanley Stanley Mess	Stanley S. SquarePants		October 20, 2012
Season 6: 2011–2012
101	Gwych Gartref Great Home	House Fancy		September 7, 2011	1
	Stryd Granclyd Street Shellfish	Krabby Road		September 10, 2011
102	Ceiniog Loyw Shiny Penny	Penny Foolish		September 14, 2011
	Myfyriwr Morwrol Maritime Student	Nautical Novice		September 17, 2011
103	Spynjicus Spongeicus	Spongicus		September 21, 2011
	Simffoni'r Sugnwr Symphony Sucker	Suction Cup Symphony		September 24, 2011
104	Bod yn Normal Being Normal	Not Normal		September 28, 2011
	Y Diflaniad Mawr The Big Displacement	Gone		October 1, 2011
105		The Splinter
		Slide Whistle Stooges
106		A Life in a Day
		Sun Bleached
107	Sulwyn Gawr	Giant Squidward		October 19, 2011
		No Nose Knows
108		Patty Caper
		Plankton's Regular
109		Boating Buddies
		The Krabby Kronicle
110		The Slumber Party
		Grooming Gary
112	Pelen Hud Magic Ball	Porous Pockets		November 16, 2011
		Choir Boys
113	Y Concwerwyr Cranci	Krusty Krushers		November 23, 2011
	Y Cerdyn	The Card		November 26, 2011
114	Annwyl Lychlynwyr	Dear Vikings		November 30, 2011
	Ditchin Mitsho	Ditchin'		December 3, 2011
115	Tadcu Barflwyd Grandfather of Beard	Grandpappy the Pirate			2
	Cyfrinfa Sephalopod Sephalopod Lodge	Cephalopod Lodge
116		Squid's Visit
		To SquarePants or Not to SquarePants
117		Shuffleboarding
		Professor Squidward
118		Pet or Pests
	Cythrwfwl Cyfrifiadurol	Komputer Overload
119	Bob yn Ail	Gullible Pants
	Dros Bob Man	Overbooked
120	Padrig Heb Benwisg	No Hat for Pat
	Y Siop Deganau Dieflig	Toy Store of Doom		July 14, 2012
121	Cestyll Tywod	Sand Castles in the Sand		July 17, 2012
	Cregyn yn Cracio	Shell Shocked		July 24, 2012
122	O'r G-Al-on	Single Cell Anniversary		August 28, 2012
125	Dwymyn Pinafal	Pineapple Fever
	Ogofeydd yr Abwyd Bait Caves	Chum Caverns

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