"The World lost a Great Man today," Rinna captioned the heartfelt photo. "Heaven got a great Angel. I love you Dad."
The 52-year-old reality star also shared a scenic artwork, painted by her father, of a placid, lake-side home.
"One of my Dads beautiful Paintings," Rinna wrote.
Hours before posting her emotional tribute, Rinna shared a throwback pic from her wedding day. The black-and-white photo shows her tuxedo-clad father accompanying her as she walks down the aisle in her elegant wedding gown.
Rinna's father had been dealing with health problems in his later years. In April 2015, Rinna took to Twitter to share the news that her father had to be admitted to the hospital
"My dad is is in the hospital again with pneumonia and it's the 4th time this year," Rinna wrote. "Dang it. He is almost 93. He is a fighter!"
My dad is is in the hospital again with pneumonia and it's the 4th time this year. Dang it. He is almost 93. He is a fighter!— lisa rinna (@lisarinna) April 27, 2015