"I Think We're Alone Now" is a song written and composed by Ritchie Cordell that was first recorded by Tommy James and the Shondells. It was a major hit for the group, reaching number 4 on the US Hot 100 in April 1967. It finished at No. 12 on Billboard magazine's year-end singles chart for 1967.

Tommy James and the Shondells is an American rock band formed in Niles, Michigan, in 1964. They had two No. 1 singles in the U.S. – "Hanky Panky" and "Crimson and Clover" – and also charted twelve other top 40 hits, including five in the Hot 100's top ten: "I Think We're Alone Now", "Mirage", "Mony Mony", "Sweet Cherry Wine" and "Crystal Blue Persuasion".