Is there an Alliteration in the Poem "Do not Go Gentle into that Good Night"?

Yes, there is an example of alliteration in the poem "Do not Go Gentle into that Good Night".

The alliteration can be found in the following lines:

"Though wise at their end know dark is right,

Wild men who caught and sang the sun in flight"

This use of alliteration helps to create a rhythmic and memorable quality to the poem, enhancing the overall impact of the words and emotions conveyed by the poet.