DJ Koh, head of Samsung's mobile division, told CNBC News: "I am already working on it."
The company already has a voice-controlled assistant called Bixby on some of its devices, which can send messages and set reminders.
One analyst said Samsung would have to differentiate itself from competitors.
Voice-controlled smart speakers are typically used to play music, set a timer, add items to a shopping list and control other internet-connected gadgets around the home.