Biografia e carriera pornografica Prima di tre fratelli, trovò lavoro a 15 anni, dopo la scuola e nei fine settimana, come venditrice di gelati in un ristorante italiano.
Fece la cameriera per sei anni, durante le superiori e l'università. Nel settembre 2000 iniziò a lavorare come modella di nudo per fotografi amatoriali e siti web. Dopo tre anni, passò ai servizi softcore e, infine, prese contatto con la pornostar tedesca Dru Berrymore. La Kassin conobbe Mark Spiegler dell'agenzia Spiegler Girls, per cui lavorò per tre anni e mezzo. Il 9 settembre 2006, ha firmato un contratto con l'agenzia americana LA Direct Models. Prima di trasferirsi negli Stati Uniti, la Kassin ha studiato Scienze politiche all'Università di Lipsia.
Il suo primo film negli Stati Uniti fu "Straight to the A 4" di Vince Voyeur per la Red Light District. Venne girato nel marzo 2003. In precedenza aveva fatto solo due scene in Europa. Nel 2004 trasferì definitivamente nell'area di Los Angeles."Good things come in small packages: An interview with Katja Kassin", by Troy Michael, 2006 IWAdult. Originally published in Genesis Magazine. URL consultato il 26 giugno 2007. Il 1º giugno 2007 ha fatto un'operazione di aumento dei seni a New York. Il suo primo servizio dopo l'intervento è stato il 26 giugno 2007.
In Germania Katja è nota per le sue partecipazioni al programma televisivo erotico Wa(h)re Liebe. Nel 2009 si è ritirata temporaneamente dall'industria pornografica per dedicarsi agli studi, salvo poi ritornare a girare scene due anni più tardi. Dal 2017 non ha più girato per cui dopo oltre 1000 scene e con 2 AVN Award e XRCO, la sua carriera può considerarsi conclusa.
La Kassin parla correntemente tedesco, russo e inglese. Il nome "Katja" le fu suggerito dal fotografo del suo primo servizio di nudo.
Vita privata Nel 2004 ha sposato il collega Sledge Hammer da cui si è separata nel 2006 e due anni dopo hanno divorziato.
Riconoscimenti AVN Awards 2006 – Best Solo Sex Scene per Anal Showdown 2009 – Best POV Sex Scene per Double Vision 2 con Tory Lane e Erik Everhard XRCO Awards 2006 – Orgasmic Analist Altri premi 2003 – Adam Film World Award – Actress of the Year 2004 – Venus (Europa) – Jury Award for Best International Actress
Filmografia
Biggz and the Beauties 4 (2003) Blow Me Sandwich 2 (2003) Butt Cream Pie 1 (2003) Butt Quest 2 (2003) Buttman's Big Butt Backdoor Babes 3 (2003) Crack Her Jack 2 (2003) Cum Dumpsters 4 (2003) Cum In My Ass Not In My Mouth 1 (2003) Cumstains 2 (2003) Erotica XXX 2 (2003) Feeding Frenzy 3 (2003) Hellcats 2 (2003) Hi-teen Club 5 (2003) I Like It Black and Deep in My Ass 4 (2003) I Love 'em Natural 1 (2003) Internal Cumbustion 2 (2003) Interracial Lust 1 (2003) Interracial Nation 4 (2003) Island Fever (2003) Jack's Playground 1 (2003) Joey Silvera's New Girls 3 (2003) Just Ass for All (2003) Katja Kassin's Fuck Me (2003) Lex Steele XXX 2 (2003) Lingerie 2 (2003) Look What's Up My Ass 2 (2003) Manhammer 1 (2003) No Cum Dodging Allowed 1 (2003) No Limits 4 (2003) Opera (2003) Pink Pussy Cats 6 (2003) POV Pervert 1 (2003) Pussy is Not Enough 2 (2003) Pussyman's International Butt Babes 7 (2003) Straight To The A 4 (2003) Truly Nice Ass 3: For Crack Addicts (2003) Un-natural Sex 10 (2003) Up Your Ass 21 (2003) Whores Inc. 2 (2003) 10 Man Cum Slam 7 (2004) 100% Natural Wonders 1 (2004) 2 + Me = 3 (2004) 5 On 1 1 (2004) A2M 3 (2004) Absolute Ass 2 (2004) Altered Assholes 1 (2004) Anal Latex Whores 1 (2004) Anal Nitrate (2004) Anal Retentive 1 (2004) Anal Retentive 4 (2004) Anal Sluts And Sweethearts 11 (2004) Anal Trainer 8 (2004) Anything Goes (2004) Apprentass 1 (2004) Art Of Oral Sex (2004) Art School Sluts (2004) Ass 2 Mouth 2 (2004) Ass 4 Cash 1 (2004) Ass Driven 2 (2004) Ass Fucked 1 (2004) Ass Obsessed 2 (2004) Ass Obsessed 3 (2004) Ass 'troyed (2004) Ass Worship 6 (2004) Assentials (2004) Azz Fest 5 (2004) Backdoor Driller (2004) Barefoot Confidential 33 (2004) Barely Legal 45 (2004) Belladonna: My Ass Is Haunted (2004) Best Butt in the West 7 (2004) Bet Your Ass 1 (2004) Big Butt Brotha Lovers 3 (2004) Big Butt Smashdown 2 (2004) Bitches in Heat 1 (2004) Black in the Saddle Again (2004) Black Up That White Ass 2 (2004) Camel Hoe's 1 (2004) Chapter X (2004) Chasing The Big Ones 22 (2004) Crack Addict 1 (2004) Craving Big Cocks 2 (2004) Cum Fart Cocktails 1 (2004) Cum Swallowing Whores 3 (2004) Delusions (2004) Dementia 1 (2004) Double Impact 2 (2004) Double Stuffed 5 (2004) DP Wreckage 1 (2004) Droppin' Loads 3 (2004) Droppin' Loads 4 (2004) Fantasy Of Flesh (2004) Filthy Things 3 (2004) Firebush 2 (2004) Four X Four 5 (2004) Fresh Ass Whores 2 (2004) Fresh Meat 18 (2004) Gang Bang 4 (2004) Girl Crazy 4 (2004) Girls of Sodom (2004) Give Me Gape 2 (2004) Droppin' Loads 4 (2004) Fantasy Of Flesh (2004) Filthy Things 3 (2004) Firebush 2 (2004) Four X Four 5 (2004) Fresh Ass Whores 2 (2004) Fresh Meat 18 (2004) Gang Bang 4 (2004) Girl Crazy 4 (2004) Girls of Sodom (2004) Give Me Gape 2 (2004) Grand Theft Anal 4 (2004) Grudge Fuck 2 (2004) Heavy Metal 6 (2004) Hellcats 4 (2004) High School Teachers in Heat 2 (2004) Hook-ups 5 (2004) I Wanna Get Face Fucked 1 (2004) Interracial Sex Shooter 5 (2004) Jack's Anal Initiations 1 (2004) Jack's Teen America 2 (2004) Jewel De'Nyle's Last Movie (2004) Just My Ass Please 2 (2004) KSEX Games 2004 (2004) Lethal Injections 1 (2004) Lezbo A-Go-Go (2004) Lighter Side of Heather (2004) Load In Every Hole 9 (2004) Mr. Pete Is Unleashed 1 (2004) My Milkshake is Thick and Double-Dicked 1 (2004) Myne Tease 3 (2004) Perverted POV 7 (2004) Phat Azz White Girls 7 (2004) Pole Position 2 (2004) Private Xtreme 15: Ass Games (2004) Psycho Love (2004) Pussy Party 1 (2004) Rain Coater's Point of View 4 (2004) Reality Porn 1: Summer Luvin''' (2004) Rectal Rooter 6 (2004) Riveted Rectums (2004) Semen Sippers 3 (2004) Service Animals 18 (2004) She Got Ass 1 (2004) Shove It Up My Ass 1 (2004) Shove It Up My... 2 (2004) Slayer Unleashed 3 (2004) Specs Appeal 18 (2004) Strange Love (2004) Suck Fuck Swallow 1 (2004) Sweet Cheeks 5 (2004) Teen Queen Pussy (2004) There's Something About Jack 31 (2004) Three's Cumpany (2004) Threesomes (2004) Truly Nice Ass 6: Fun Buns (2004) Ultimate Asses 3 (2004) Ultimate DP Gang Bang 1 (2004) Uranus or Bust (2004) Wet Teens 5 (2004) White Wife Black Cock 4 (2004) Wild Side 1 (2004) Young Blonde Voyeurs 2 (2004) Young Cheerleaders Swap N' Swallow 2 (2004) 2 Fast for Love (2005) American Dreams (2005) Anal Incorporated (2005) Anal Prostitutes On Video 2 (2005) Anal Showdown (2005) Anal Sinsations (2005) And The Envelope Please Tawny Roberts (2005) Apple Bottomz 1 (2005) Apprentass 3 (2005) Ass Factor 2 (2005) Ass Feast 2 (2005) Ass Pumpers 1 (2005) Ass Takers 1 (2005) Ass Up Face Down (2005) Assault That Ass 6 (2005) Assfixiation 2 (2005) Assploitations 5 (2005) Asswhole 2 (2005) Bacchanales (2005) Barely Legal All Stars 4 (2005) Beef Eaters 2 (2005) Belladonna's Do Not Disturb (2005) Big Ass Orgy (2005) Big Booty White Girls 3 (2005) Big Gulps 1 (2005) Big Toys No Boys 3 (2005) Big White Wet Butts 2 (2005) Black Boned 2 (2005) Black in the Crack Black in the Back 1 (2005) Black in White 3 (2005) Black Magic (2005) Blow Me 3 (2005) Bush Hunter 1 (2005) Buttman's Vault of Whores (2005) Butts 2 Nuts 5 (2005) Cameltoe Perversions 3 (2005) Camp Cuddly Pines Power Tool Massacre (2005) Craving Black Cock 1 (2005) Crude Oil 1 (2005) Cum Buckets 2 (2005) Cum Swappers 4 (2005) Cumstains 6 (2005) Day Without Whores (2005) Erotic Cabaret 1 (2005) European Mail Order Brides 5 (2005) Fuck Doll Sandwich 3 (2005) Fuck My White Ass 1 (2005) Gag on This 1 (2005) Girl Crazy 6 (2005) Glamour Sluts 1 (2005) Goo 4 Two 2 (2005) Great Big Asses 1 (2005) Gutter Mouths 31 (2005) Hand to Mouth 2 (2005) Hellfire Sex 2 (2005) Her First Anal Sex 2 (2005) Hold Every Drop Then Swap (2005) Hooker Chic (2005) Hook-ups 8 (2005) Hos 4 Bros (2005) House of Anal (2005) House Pets (2005) I Got Banged 3 (2005) If It Ain't Black Take It Back 4 (2005) In Da White Booty (2005) Iron Head 3 (2005) Jack's My First Porn 3 (2005) Jack's Teen America 7 (2005) Jon Dough's Favorite Blow Jobs And Anals (2005) Kick Ass Chicks 22: Superstars (2005) Kick Ass Chicks 23: Anal Queens (2005) Kiss My Ass (2005) Lewd Conduct 23 (2005) Live In Slave 3 (2005) Lucky Bastard 3 (2005) Man's Best Friend (2005) Many Shades of Mayhem 1 (2005) Mayhem Explosions 3 (2005) Motel Freaks (2005) Mouth 2 Mouth 1 (2005) Ms. Violation (2005) Nailed With Cum 2 (2005) Nasty Hard Sex 2 (2005) Next Exit Porn Valley (2005) No Cum Spitting 2 (2005) No Man's Land Interracial Edition 8 (2005) Nut Busters 6 (2005) Nuttin' Hunnies 2 (2005) Nuttin' Hunnies 3 (2005) O Zone (2005) Outnumbered 3 (2005) Please Drill My Ass POV Style 2 (2005) Searching For: The Anal Queen 2 (2005) Semen Demons 2 (2005) Shag (2005) Share the Load 3 (2005) Shut Up And Fuck Me 2 (2005) Size Queens 2 (2005) Ski Bitch (2005) Slick Chicks Black Dicks (2005) Smokin' Redhead Pussies (2005) Spunk'd (2005) Squirting 101 7 (2005) Strap Attack 3 (2005) Stuck In The Deep End (2005) Surrender to Lust (2005) Taste Her Ass 2 (2005) Tastes Like Cum (2005) Tear Me A New One 1 (2005) Teenage Anal Princess 2 (2005) Tex-ass Hole Em (2005) Throat Sluts 1 (2005) Top Porn Stars (2005) Who Fucked Rocco (2005) Workplace (2005) 69 Flava's 1 (2006) American Daydreams 1 (2006) Anal Addicts 22 (2006) Anal Adventures 1: Sorority Sisters (2006) Anal Renegades 2 (2006) Anal Xcess 3 (2006) Anal-Licious 1 (2006) Anally Yours... Love, Jenna Haze (2006) Are You a Buttman (2006) Ass Addiction 1 (2006) Ass Breath (2006) Ass For Days 1 (2006) Ass Masterpiece 1 (2006) Ass Parade 6 (2006) Ass Takers 2 (2006) Ass Whores from Planet Squirt 2 (2006) Assfensive 6 (2006) Asstravaganza 2 (2006) Assturbators 3 (2006) Assume the Position (2006) Backdoor Desires (2006) Belladonna: Fetish Fanatic 3 (2006) Big Bubble Butt Anal Sluts 1 (2006) Black Cock Addiction 2 (2006) Black Domination (2006) Black Label 41: God's Will (2006) Black Men White Women (2006) Bring It Black 3 (2006) Bring Your A Game 2 (2006) Bubble Butts Galore 4 (2006) Butt Blast (2006) Butt Gallery 5 (2006) Culos Gigantes 1 (2006) Cum Buckets 6 (2006) Cum Swallow (2006) Cumstains 7 (2006) Curb Appeal (2006) Custom Blowjobs (2006) Dark Side of Mya Luanna (2006) Destination Dirtpipe 1 (2006) Destroy the World 4 (2006) Devinn Lane's Guide to Strap-On Sex (2006) Disturbed 4 (2006) Double D Babes 2 (2006) Double Shocker 2 (2006) DP Me Baby 2 (2006) Elite 1 (2006) Erotica XXX 11 (2006) Facial Frenzy 2 (2006) Fucking in the Name of Science (2006) Gag Factor 22 (2006) Girl Power (2006) Girlvana 2 (2006) Girlvert 13 (2006) Good Whores Take It in the Ass 2 (2006) House of Ass 1 (2006) Incredible Expanding Vagina (2006) Interactive Gangbang (2006) Interracial (2006) Interracial Encounters (2006) Jack's Big Ass Show 3 (2006) Jack's Big Ass Show 5 (2006) Jack's Teen America 16 (2006) Janine Loves Jenna (2006) Jenna Does Carmen (2006) Katja Kassin's Foot Tease (2006) Kick Ass Chicks 34: Big White Butts (2006) Little Cream Puffs 12 (2006) Male Is In The Czech (2006) Maximum Results (2006) McKenzie Illustrated (2006) Meat My Ass 1 (2006) MILF Slammers 1 (2006) My Sex Tour 4 (2006) Neighbor Affair 1 (2006) Nurse This (2006) Nurseholes 1 (2006) Nuts 4 Big Butts 1 (2006) Pat Myne's POV (2006) Penetration 12 (2006) Plug My Ass in the USA (2006) Power Bitches 2 (2006) Pure Filth 3 (2006) Ready Set Blow (2006) Ronnie James' Anal POV (2006) Ronnie James POV Pussy (2006) Sexecution 1 (2006) She's Got It 1 (2006) Shove It Up My... 4 (2006) Slumber Party 20 (2006)