The 33-year-old marketing executive’s body was found in Kent after she went missing in south London last week, and a police officer has been charged with kidnapping and murdering her.
Across the country, people lit candles and observed a minute’s silence in memory of Ms Everard.
Actor Grant shared a video on Twitter of him observing the silence while holding a lit candle.
A clip of a candle was also shared by actress Smith.
Alongside her video, she wrote: “RIP SARAH EVERARD.”
Singer Ferguson shared a poem she appeared to have written, titled Violence Of Man.
“The violence of man is being scared to walk in the dark, scared to take a stroll through a quiet country park,” it said.
She shared the #ReckaimTheseStreets hashtag alongside the clip.
Good Morning Britain weather presenter Alex Beresford also appeared to address the vigil in a tweet.
He wrote: “MEN LISTEN UP! We need to make boys better men.
“Fathers; think about how you speak to your sons about women!
“ACTUALLY we should be teaching this in schools too. Change starts NOW!”