Hundreds of friends, colleagues and political rivals attended the funeral, including former and present ministers and Knesset members.
Prime Minister Ehud Olmert, Lapid's close friend for decades, eulogized him. "You were my fortress in times of storm, a loyal friend. It's difficult talking about you and not to you," he said in tears.
"You were the most entertaining and most annoying person, the most loyal friend I ever had. A person who spoke the truth, sharp-witted, blatant, loving. When we wanted a bit of moderation you were extreme, and when we wanted patience you would scold us."
Journalist Yair Lapid eulogized his father and read a poem written by Welsh poet Dylan Thomas. Frank Sinatra's song "I Did it My Way" was played at the end of the funeral procession.
Lapid, who suffered from cancer, was hospitalized several days ago in serious condition at the Sourasky Medical Center in Tel Aviv. On Saturday evening he was still full conscious.