diff --git a/action.yml b/action.yml
index 5975dde..4f64fd7 100644
--- a/action.yml
+++ b/action.yml
@@ -40,6 +40,11 @@ inputs:
     description: 'Use the GitHub API to discover current tags, which avoids the need for a git checkout, but requires `curl` and `jq`'
     required: false
     default: false
+  tag_prefix:
+    description: |
+      Field to prefix the tag with a string (defaults to empty string). This is useful for projects that use a prefix in their tags. E.g. if set to `@org/product` the action will return `@org/product/1.2.3` as version.
+    required: false
+    default: false
 
 outputs:
   current-version:
@@ -86,6 +91,7 @@ runs:
         github_token: ${{ github.token }}
         scheme: ${{ inputs.scheme }}
         use_api: ${{ inputs.use_api }}
+        tag_prefix: ${{ inputs.tag_prefix }}
 
     - id: version-increment
       run: "${GITHUB_ACTION_PATH}/version-increment.sh"
diff --git a/shared.sh b/shared.sh
index 8fe79cc..4f64f5b 100644
--- a/shared.sh
+++ b/shared.sh
@@ -11,7 +11,11 @@ export LC_ALL=C.UTF-8
 
 pcre_semver='^(?P<major>0|[1-9]\d*)\.(?P<minor>0|[1-9]\d*)\.(?P<patch>0|[1-9]\d*)(?:-(?P<prerelease>(?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*)(?:\.(?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*))*))?(?:\+(?P<buildmetadata>[0-9a-zA-Z-]+(?:\.[0-9a-zA-Z-]+)*))?$'
 pcre_master_ver='^(?P<major>0|[1-9]\d*)\.(?P<minor>0|[1-9]\d*)\.(?P<patch>0|[1-9]\d*)$'
-pcre_allow_vprefix="^v{0,1}${pcre_master_ver:1}"
+
+# Extended regex to allow arbitrary prefixes before the semver
+pcre_allow_prefix='^.*(?P<semver>'"${pcre_master_ver:1}"')$'
+
+pcre_allow_vprefix="^v{0,1}${pcre_allow_prefix:1}"
 pcre_old_calver='^(?P<major>0|[1-9]\d*)-0{0,1}(?P<minor>0|[0-9]\d*)-R(?P<patch>0|[1-9]\d*)$'
 
 ##==----------------------------------------------------------------------------
@@ -51,6 +55,15 @@ if [[ "${use_api}" == 'true' ]] ; then
     fi
 fi
 
+# Check if the tag_prefix is set, and if not, set it to an empty string
+tag_prefix="${tag_prefix:-}"
+
+# Add a trailing @ to tag_prefix if it doesn't already end with one
+if [[ -n "$tag_prefix" && "${tag_prefix: -1}" != "@" ]]; then
+    tag_prefix="${tag_prefix}@"
+fi
+
+
 ##==----------------------------------------------------------------------------
 ##  MacOS compatibility
 
diff --git a/tests/test_version-increment.bats b/tests/test_version-increment.bats
index 1638a7d..68db626 100644
--- a/tests/test_version-increment.bats
+++ b/tests/test_version-increment.bats
@@ -409,3 +409,24 @@ function init_repo {
     [[ "$output" = *"VERSION=1.2.4"* ]]
     [[ "$output" = *"No conventional commit found"* ]]
 }
+
+
+@test "increments the patch version by default if no conventional commits found and enabled (conventional commits) (with tag_prefix)" {
+    init_repo
+
+    export tag_prefix="@org/product"
+    export current_version="@org/product@1.2.3"
+    export scheme="conventional_commits"
+
+    echo "some new change" > feat.txt
+    git add feat.txt
+    git commit -m "new change"
+
+    run ../../version-increment.sh
+
+    print_run_info
+    [ "$status" -eq 0 ] &&
+    [[ "$output" = *"VERSION=@org/product@1.2.4"* ]]
+    [[ "$output" = *"V_VERSION=@org/product@v1.2.4"* ]]
+    [[ "$output" = *"No conventional commit found"* ]]
+}
diff --git a/tests/test_version-lookup.bats b/tests/test_version-lookup.bats
index 7373e37..57c2932 100644
--- a/tests/test_version-lookup.bats
+++ b/tests/test_version-lookup.bats
@@ -72,6 +72,37 @@ function init_repo {
     [[ "$output" = *"CURRENT_V_VERSION=v0.1.2"* ]]
 }
 
+@test "finds the current normal version with tag_prefix enabled" {
+    init_repo
+
+    export tag_prefix="@org/product"
+
+    git tag @org/product@0.0.1
+    git tag @org/product@0.1.1
+    git tag @org/product@0.1.2
+
+    run version-lookup.sh
+
+    print_run_info
+    [ "$status" -eq 0 ] &&
+    [[ "$output" = *"CURRENT_VERSION=0.1.2"* ]]
+}
+
+@test "tag_prefix enabled prefixes with a v" {
+    init_repo
+
+    export tag_prefix="@org/product"
+
+    git tag @org/product@0.1.2
+
+    run version-lookup.sh
+
+    print_run_info
+    [ "$status" -eq 0 ] &&
+    [[ "$output" = *"CURRENT_VERSION=0.1.2"* ]] &&
+    [[ "$output" = *"CURRENT_V_VERSION=v0.1.2"* ]]
+}
+
 @test "finds the current normal version even if there's a newer pre-release version" {
     init_repo
 
diff --git a/version-increment.sh b/version-increment.sh
index 9fef875..a754abe 100755
--- a/version-increment.sh
+++ b/version-increment.sh
@@ -15,8 +15,8 @@ fi
 if [[ -z "${current_version:-}" ]] ; then
     echo "🛑 Environment variable 'current_version' is unset or empty" 1>&2
     input_errors='true'
-elif [[ -z "$(echo "${current_version}" | grep_p "${pcre_master_ver}")" ]] ; then
-    echo "🛑 Environment variable 'current_version' is not a valid normal version (M.m.p)" 1>&2
+elif [[ -z "$(echo "${current_version}" | grep_p "${pcre_allow_prefix}")" ]] ; then
+    echo "🛑 Environment variable 'current_version' is not a valid normal version (M.m.p) or (prefix@M.m.p)" 1>&2
     input_errors='true'
 fi
 
@@ -108,7 +108,8 @@ elif [[ "${increment}" == 'major' ]] ; then
     version_array[2]='0'
 fi
 
-new_version="${version_array[0]}.${version_array[1]}.${version_array[2]}"
+new_version="${tag_prefix}${version_array[0]}.${version_array[1]}.${version_array[2]}"
+new_v_version="${tag_prefix}v${version_array[0]}.${version_array[1]}.${version_array[2]}"
 
 # check we haven't accidentally forgotten to set scheme to calver
 # TODO: provide an override "I know my version numbers are > 2020, but it's semver!" option
@@ -139,7 +140,7 @@ echo "ℹ️ The new version is ${new_version}"
 
 # shellcheck disable=SC2129
 echo "VERSION=${new_version}" >> "${GITHUB_OUTPUT}"
-echo "V_VERSION=v${new_version}" >> "${GITHUB_OUTPUT}"
+echo "V_VERSION=${new_v_version}" >> "${GITHUB_OUTPUT}"
 echo "MAJOR_VERSION=${version_array[0]}" >> "${GITHUB_OUTPUT}"
 echo "MINOR_VERSION=${version_array[1]}" >> "${GITHUB_OUTPUT}"
 echo "PATCH_VERSION=${version_array[2]}" >> "${GITHUB_OUTPUT}"
diff --git a/version-lookup.sh b/version-lookup.sh
index 1780cc9..a06cd6c 100755
--- a/version-lookup.sh
+++ b/version-lookup.sh
@@ -23,6 +23,21 @@ fi
 ##==----------------------------------------------------------------------------
 ##  Version parsing
 
+# Function to extract the semver part from the tag
+extract_semver() {
+    local tag="$1"
+    if [[ -n "${tag_prefix:-}" ]]; then
+        # Escape special characters in tag_prefix
+        local escaped_prefix
+        escaped_prefix=$(printf '%s\n' "$tag_prefix" | sed 's/[][\/.^$*]/\\&/g')
+
+        # Use | as the delimiter to avoid conflicts with /
+        echo "${tag}" | sed "s|^${escaped_prefix}||"
+    else
+        echo "${tag}"
+    fi
+}
+
 # detect current version - removing "v" from start of tag if it exists
 if [[ "${use_api:-}" == 'true' ]] ; then
     current_version="$(
@@ -32,12 +47,18 @@ if [[ "${use_api:-}" == 'true' ]] ; then
             -H "X-GitHub-Api-Version: 2022-11-28" \
             "${GITHUB_API_URL}/repos/${GITHUB_REPOSITORY}/git/matching-refs/tags/" \
         | jq -r '.[].ref' | sed 's|refs/tags/||g' \
-        | { grep_p "${pcre_allow_vprefix}" || true; } | sed 's/^v//g' | sort -V | tail -n 1
+        | { grep_p "${pcre_allow_vprefix}" || true; } \
+        | sed 's/^v//g' \
+        | while read -r tag; do extract_semver "$tag"; done \
+        | sort -V | tail -n 1
     )"
 else
     current_version="$(
         git tag -l \
-        | { grep_p "${pcre_allow_vprefix}" || true; } | sed 's/^v//g' | sort -V | tail -n 1
+        | { grep_p "${pcre_allow_vprefix}" || true; } \
+        | sed 's/^v//g' \
+        | while read -r tag; do extract_semver "$tag"; done \
+        | sort -V | tail -n 1
     )"
 fi