Bob Saget would have turned 70 over the weekend … and his best pal John Stamos made sure fans remembered.

Via a series of pictures through the years — including the last one taken together before Bob’s untimely death — Stamos told fans he misses Bob horribly … and that he would have thrown him the most epic 70th birthday party.

It’s as sweet as it is sad … the two becoming best pals through their work on “Full House” — and clearly staying tight for all the years afterward.

TMZ broke the devastating news … Bob died in January 2022 … at the age of 65.