Kimmorley took over as NRL head coach of the Tigers after the club axed Michael Maguire in June, but he struggled to salvage a season that had begun poorly.
Prior to that, he had served as the Tigers' pathways coaching manager and coach of the club's NSWRL women's premiership side.
NRL duties required Kimmorley to vacate his role in the women's premiership but the side went on to defeat Cronulla in July's grand final.
On the field, Kimmorley was one of only 45 men to reach 300 games at Australian first-grade level and played halfback in Melbourne's maiden premiership win in 1999.
"I loved my short time with the Harvey Norman (women's premiership) team, and we formed a strong bond in just a month or so," Kimmorley said.
"To see the team win the premiership was a special moment for the club and I was thrilled for them.
"One thing that really stood out for me was the players' thirst for knowledge, and how quickly they picked things up.
"Taking charge of the first ever Wests Tigers NRLW team is an honour, and I would like to thank the club for this opportunity."
The Tigers' women's premiership captain Emily Curtain endorsed Kimmorley, known as Noddy, for the NRLW job as the club prepares to assemble its inaugural roster.
"All the girls really respect Noddy and learned a lot from him this year," she said.
"I've seen in just the past couple of seasons girls progressing through our pathways, but then going elsewhere to join an NRLW club.
"This is a huge opportunity for so many young players to aspire to be an NRLW player here with the Wests Tigers."
The Tigers' announcement comes the day after Canberra, another of the next four expansion teams, announced Darrin Borthwick as their NRLW head coach.
The Raiders and Tigers have been joined by North Queensland and Cronulla in receiving NRLW licences for next season.
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