Hello Down There is a 1969 American comedy-adventure film starring Tony Randall and Janet Leigh that was released by Paramount Pictures. It was produced by George Sherman and Ivan Tors and directed by Jack Arnold and Ricou Browning. The screenplay was written by John McGreevey and Frank Telford.

Anthony Leonard Randall was an American actor. He is best known for portraying the role of Felix Unger in a television adaptation of the 1965 play The Odd Couple by Neil Simon. In a career spanning six decades, Randall received six Golden Globe Award nominations and six Primetime Emmy Award nominations, winning one Emmy.