Erogenos

Offers men's underwear, swimwear, and athletic apparel.
http://www.erogenos.com/

BriefTales

Briefs, boxers, thongs, exotic and risque underwear including leather.
http://www.brieftales.com/

UnderU

Sells designer men's underwear and swimwear.
http://www.UnderU.com

TopDrawers

Boxers, briefs, thongs, underwear, clothing and accessories.
http://www.topdrawers.com/

The Cascade Group

Men's underwear, halfbacks, fullbacks in nylon/lycra, leather, vinyl.
http://www.underthings.com

Undyworld

From Canada, a collection of designer underwear and swimwear.
http://www.undyworldunderwear.com

Under Him

Individually designed quality underwear for men in step with the latest fashion. From Australia.
http://www.underhim.com.au/

Wyzman

Men's fashion underwear and swimwear.
http://www.wyzman.com

Macadi

Featuring underwear and undergear
http://www.macadi.com

UnderThong.Com

Sells mens briefs, boxers, boxer briefs, bikinis, thongs, jocks and swimwear.
http://www.underthong.com/

Male Basics

Features Unico brand boxers, pajamas, bikinis, and thongs.
http://www.malebasics.com

Mensunderwearstore.com

Extensive collection of men's underwear, swimwear, and club clothes.
http://www.mensunderwearstore.com

UnderWearProducts.com

Swimwear, thongs, g-strings, and boxers by Joe Snyder and N2N.
http://www.underwearproducts.com/

Planet Undies

Men's underwear, including boxer styles, thongs and briefs. From France.
http://www.planet-undies.com/catalog/default.php?language=en

Attivo USA

Offers thongs, g-strings, briefs, bikinis, boxers, and boxer-briefs.
http://www.attivousa.com/

The Fell Company

Polo, Ralph Lauren, Calvin Klein and Jockey briefs, boxers and undershirts, Barbour outdoor clothing, and Boblbee computer backpacks.
http://www.chicagomensunderwear.com/

Undergear

Men's underwear and activewear.
http://www.undergear.com/

International Jock

A selection of jockstraps and men's support underwear.
http://internationaljock.com

Internet Dry Goods Company

Calvin Klein Men's packaged underwear.
http://chicagoman.com

Skiviez

Men's underwear including boxers, boxer briefs, briefs, jock straps, and thongs.
http://www.skiviez.com

ABC Underwear

Men's briefs, bikinis, thongs, jock straps, and swimwear.
http://www.abcunderwear.com

Audace.com

Selection of thongs, bikinis, briefs and boxers from various brand names.
http://www.audace.com/

Banana Man

Men's underwear designed and made in Australia in a variety of styles, fabrics, and colours.
http://www.bananaman.com.au

Custom Creations 4 Men

Custom made men's thongs, g-strings, and underwear for all sized men.
http://www.customcreations4men.com

HF Trading

Ergonomically designed men's underwear, shipped worldwide.
http://www.ergowear.com

The Hand

Wind proof jock straps for use by male cross country skiers and runners.
http://www.the-hand.com/

Maleskin, Inc.

Men's underwear including action pants, action wear, and beach and swimwear.
http://www.maleskin.com/malestore/index.ihtml

Under Wares for Him

Brands include 2(X)ist, 2nd Skin, bodystyle and Bonsoir.
http://www.underwaresforhim.com/

Zyclogear

Men's underwear including thongs, g-strings and jocks. From Canada
http://www.zyclogear.com

Down Under Guys Gear - DUGG

Sydney, Australia based site selling g-string, briefs, boxers, socks and singlets.
http://www.dugg.com.au

Bodytropolis.com

Sexy underwear, hip sportswear and unique skin care for men.
http://www.bodytropolis.com

HisRoom

Brand-name men's underwear.
http://www.hisroom.com

Briefhouse

Brazilian seamless underwear shop featuring modal cotton/lycra and microfiber fabrics.
http://www.briefhouse.com

Hunkwear

Featuring briefs, bodysuits, boxers, swimwear and thongs.
http://www.hunkwear.com

underguy.com

Offering men's underwear and swimwear including thongs, briefs, boxers, and jocks.
http://www.underguy.com

theunderworld4men

Unique men's underwear, swimwear and clubwear.
http://www.theunderworld4men.com

Kiniki

Briefwear men's boxers, briefs, swimwear, tangas, thongs and g-strings. UK based.
http://www.kiniki.com

DT Jocks

Classic men's briefs in cotton. Includes image gallery, products, and stockists. Australia.
http://www.dtjocks.com

Below The Belt

Designer men's underwear, 2Xist, Jocko, Body Body Wear, Ian Thorpe. From Australia, delivery world wide.
http://www.belowthebelt.com.au