"Louder than Words" is a song written by David Gilmour and Polly Samson. The song, featuring lyrics written by Samson to accompany a composition by Gilmour, was originally recorded by British rock band Pink Floyd as the closing track of their fifteenth studio album, The Endless River. The track, which had its roots in the 1993 sessions for the band's previous studio album, The Division Bell, features a posthumous appearance by former keyboardist and founding member of Pink Floyd, Richard Wright, and an appearance by electronic string quartet Escala. "Louder than Words" is the only song on the album with lyrics, sung by lead vocalist Gilmour.

The track was released to US mainstream rock radio on 14 October 2014, serving as the first release in promotion of The Endless River.

The music accompanying the song, composed by David Gilmour, has been described by various music critics and writers, including Exclaim! writer Josiah Hughes as a "A slow-burning, melodramatic track complete with plenty of intense guitar and synth work" and by Clash writer Robin Murray as a "sparse, trippy track, one which is heavy on guitar led atmosphere and ominous electronic production". The lyrics, written by Gilmour's wife, Polly Samson, depicts "stately depiction of undying love, a tribute to Richard Wright and the importance of overcoming petty differences". Gilmour spoke about the song with The Guardian, stating:

Well, Rick is gone. This is the last thing that'll be out from us. I'm pretty certain there will not be any follow up to this. And Polly, my wife, thought that would be a very good lyrical idea to go out on. A way of describing the symbiosis that we have. Or had… I didn't necessarily always give [Wright] his proper due. People have very different attitudes to the way they work and we can become very judgmental and think someone is not quite pulling his weight enough, without realising that theirs is a different weight to pull.

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