Phil Decker

{{Infobox character

| name = Phil Decker

| series = Jerry Cotton

| image =

| caption =

| first =

| last =

| creator = Jerry Cotton (various authors including Rolf Kalmuczak & Heinz Werner Höber

| portrayer = Heinz Weiss (1965-69)
Christian Ulmen (2007)

| gender = Male

| affiliation = Jerry Cotton

| occupation = FBI Agent

| nationality = American

}}

Phil Decker is a fictional character in Heinz Werner Höber's Jerry Cotton novels. He is Cotton's sidekick and a fellow FBI agent.

Subsequently, he appeared in the films Manhattan Night of Murder (1965), Tread Softly (1965) and six other films starring George Nader as Jerry Cotton. In all these films he was portrayed by Heinz Weiss.

In 2010's ironic revival film Jerry Cotton he was played by the comedian Christian Ulmen.