Why didn't John Lennon have a funeral?

Answer 1

because of the tragic, violent nature of his death it didnt seem fitting to hold a public funeral. I'm sure Lennon's family members held some type of memorial in private but didnt want to be bothered by the press or bring attention to such a horrible act of violence as a shooting. John Lennon's wife, Yoko Ono Lennon made an announcement the next day stating there would be no funeral for John, but she did hold a worldwide moment of silence in his honor and at the Imagine memorial in central park, at Abbye Road in London, and elsewhere in the world, fans mourned on their own and held their own memorial events (just not officially approved/sponsored by the Lennon family)

Answer 2

He was cremated in a private ceremony. Yoko said she did this because John loathed the carnival atmosphere at Elvis's funeral.