Thou Shalt Not Lie

{{more citations needed|date=May 2019}}

{{Use mdy dates|date=March 2025}}

{{Use American English|date=January 2025}}

{{Infobox film

| name = Thou Shalt Not Lie

| image =

| caption =

| director = Clem Easton

| producer =

| writer = Dwight Cleveland (Story)

| narrator =

| starring = William Garwood
Violet Mersereau
Charles Ogle
William Welsh

| music =

| cinematography =

| editing =

| distributor = Universal Film Manufacturing Company

| released = {{Film date|1915|07|22}}

| runtime = 2 reels (approx. 20 minutes)

| country = United States

| language = Silent film
English intertitles

}}

Thou Shalt Not Lie is a 1915 American silent film directed by Clem Easton and starring William Garwood and Violet Mersereau. The film also starred Charles Ogle, and William Welsh.