Larry H. Parker, Auto Accident & Personal Injury Attorney, Dead at 75

Larry H. Parker -- the famous auto accident and personal injury attorney known for his iconic commercials in the '80s and '90s -- has died ... TMZ has learned.

The famed attorney's longtime law firm partner, Ron Beck, confirmed to us Friday that Larry had passed away ... but wouldn't elaborate on details -- including where, when or under what circumstances.

Larry's daughter-in-law, Alissa, also told us the sad news was true -- but she wouldn't reveal more either ... telling us the family is considering their next steps.

We're hearing he may have died as recently as this week, although it's not 100% clear. In any case, it's a huge blow to the legal community ... as LHP was a titan in the industry.

People in and around Los Angeles -- and even in the greater Southern California area -- know Parker well ... if not for his TV ads, then for his many billboards all over the region. If you've been on the 405 in L.A., you've very likely passed by and seen Larry's face.

He's the founder of the Law Offices of Larry H. Parker -- which mostly specializes in taking cases for people who've been in car accidents, but which takes a variety of injury-related cases. His firm has been up and running for at least 50 years ... so he's an L.A. staple.

Larry opened his law office in the '70s, and it's gone on to become one of the biggest in America -- which now employs over 150 lawyers, all of whom work under Larry's brand.

His approach to promoting his services pierced pop culture and arguably served as the blueprint for many other attorneys (and spoofs) seeking to reach an audience. You could say that the spirit of his straightforward legal ads has gone on to inspire several iterations ... both fictional and real. The 'SNL' Green & Fazio sketch seems to have been inspired by Larry's work, and ditto for 'Better Call Saul.'

Of course, there are countless other real-life lawyers who've followed in his footprints all over the country ... buying up billboards, ad space and airtime to let people know they're ready to take a case and go to court for the public.

His slogan was "We'll Fight for You!" ... and safe to say, it's burned into the American psyche.

Larry was 75.