diff --git a/modules/gatk/unifiedgenotyper/main.nf b/modules/gatk/unifiedgenotyper/main.nf
new file mode 100644
index 00000000..e88ac7c5
--- /dev/null
+++ b/modules/gatk/unifiedgenotyper/main.nf
@@ -0,0 +1,63 @@
+process GATK_UNIFIEDGENOTYPER {
+    tag "$meta.id"
+    label 'process_medium'
+
+    conda (params.enable_conda ? "bioconda::gatk=3.5" : null)
+    container "${ workflow.containerEngine == 'singularity' && !task.ext.singularity_pull_docker_container ?
+        'https://depot.galaxyproject.org/singularity/gatk:3.5--hdfd78af_11':
+        'quay.io/biocontainers/gatk:3.5--hdfd78af_11' }"
+
+    input:
+    tuple val(meta), path(input), path(index)
+    path  fasta
+    path  fai
+    path  dict
+    path  intervals
+    path  contamination
+    path  dbsnp
+    path  comp
+
+    output:
+    tuple val(meta), path("*.vcf.gz"), emit: vcf
+    path "versions.yml"              , emit: versions
+
+    when:
+    task.ext.when == null || task.ext.when
+
+    script:
+    def args = task.ext.args ?: ''
+    def prefix = task.ext.prefix ?: "${meta.id}"
+    def contamination_file = contamination ? "-contaminationFile ${contamination}" : ""
+    def dbsnp_file = dbsnp ? "--dbsnp ${dbsnp}" : ""
+    def comp_file = comp ? "--comp ${comp}" : ""
+    def intervals_file = intervals ? "--intervals ${intervals}" : ""
+
+    def avail_mem = 3
+    if (!task.memory) {
+        log.info '[GATK RealignerTargetCreator] Available memory not known - defaulting to 3GB. Specify process memory requirements to change this.'
+    } else {
+        avail_mem = task.memory.giga
+    }
+
+    """
+    gatk3 \\
+        -Xmx${avail_mem}g \\
+        -nt ${task.cpus} \\
+        -T UnifiedGenotyper \\
+        -I ${input} \\
+        -R ${fasta} \\
+        ${contamination_file} \\
+        ${dbsnp_file} \\
+        ${comp_file} \\
+        ${intervals_file} \\
+        -o ${prefix}.vcf \\
+        $args
+
+    gzip -n *.vcf
+
+    cat <<-END_VERSIONS > versions.yml
+    "${task.process}":
+        gatk: \$(echo \$(gatk3 --version))
+    END_VERSIONS
+    """
+}
diff --git a/modules/gatk/unifiedgenotyper/meta.yml b/modules/gatk/unifiedgenotyper/meta.yml
new file mode 100644
index 00000000..e414d146
--- /dev/null
+++ b/modules/gatk/unifiedgenotyper/meta.yml
@@ -0,0 +1,73 @@
+name: "gatk_unifiedgenotyper"
+keywords:
+  - bam
+  - vcf
+  - variant calling
+tools:
+  - "gatk":
+      description: "The full Genome Analysis Toolkit (GATK) framework, license restricted."
+      homepage: "https://gatk.broadinstitute.org/hc/en-us"
+      documentation: "https://github.com/broadinstitute/gatk-docs"
+      licence: "['https://software.broadinstitute.org/gatk/download/licensing', 'BSD', 'https://www.broadinstitute.org/gatk/about/#licensing']"
+
+input:
+  - meta:
+      type: map
+      description: |
+        Groovy Map containing sample information
+        e.g. [ id:'test', single_end:false ]
+  - input:
+      type: file
+      description: Sorted and indexed BAM/CRAM/SAM file
+      pattern: "*.bam"
+  - index:
+      type: file
+      description: BAM index file
+      pattern: "*.bai"
+  - fasta:
+      type: file
+      description: Reference file used to generate BAM file
+      pattern: ".{fasta,fa,fna}"
+  - fai:
+      type: file
+      description: Index of reference file used to generate BAM file
+      pattern: ".fai"
+  - dict:
+      type: file
+      description: GATK dict file for reference
+      pattern: ".dict"
+  - intervals:
+      type: file
+      description: Bed file with the genomic regions included in the library (optional)
+      pattern: "*.intervals"
+  - contamination:
+      type: file
+      description: Tab-separated file containing fraction of contamination in sequencing data (per sample) to aggressively remove
+      pattern: "*"
+  - dbsnps:
+      type: file
+      description: VCF file containing known sites (optional)
+      pattern: "*"
+  - comp:
+      type: file
+      description: Comparison VCF file (optional)
+      pattern: "*"
+
+output:
+  - meta:
+      type: map
+      description: |
+        Groovy Map containing sample information
+        e.g. [ id:'test', single_end:false ]
+  - versions:
+      type: file
+      description: File containing software versions
+      pattern: "versions.yml"
+  - vcf:
+      type: file
+      description: VCF file containing called variants
+      pattern: "*.vcf.gz"
+
+authors:
+  - "@ilight1542"
+  - "@jfy133"
diff --git a/tests/config/pytest_modules.yml b/tests/config/pytest_modules.yml
index 04580c79..715f7905 100644
--- a/tests/config/pytest_modules.yml
+++ b/tests/config/pytest_modules.yml
@@ -715,6 +715,10 @@ gamma/gamma:
   - modules/gamma/gamma/**
   - tests/modules/gamma/gamma/**
 
+gatk/unifiedgenotyper:
+  - modules/gatk/unifiedgenotyper/**
+  - tests/modules/gatk/unifiedgenotyper/**
+
 gatk4/applybqsr:
   - modules/gatk4/applybqsr/**
   - tests/modules/gatk4/applybqsr/**
diff --git a/tests/modules/gatk/unifiedgenotyper/main.nf b/tests/modules/gatk/unifiedgenotyper/main.nf
new file mode 100644
index 00000000..6d145e76
--- /dev/null
+++ b/tests/modules/gatk/unifiedgenotyper/main.nf
@@ -0,0 +1,18 @@
+#!/usr/bin/env nextflow
+
+nextflow.enable.dsl = 2
+
+include { GATK_UNIFIEDGENOTYPER } from '../../../../modules/gatk/unifiedgenotyper/main.nf'
+
+workflow test_gatk_unifiedgenotyper {
+
+    input     = [ [ id:'test' ], // meta map
+                  file(params.test_data['sarscov2']['illumina']['test_paired_end_sorted_bam'], checkIfExists: true),
+                  file(params.test_data['sarscov2']['illumina']['test_paired_end_sorted_bam_bai'], checkIfExists: true),
+                ]
+    fasta = file(params.test_data['sarscov2']['genome']['genome_fasta'], checkIfExists: true)
+    fai = file(params.test_data['sarscov2']['genome']['genome_fasta_fai'], checkIfExists: true)
+    dict = file(params.test_data['sarscov2']['genome']['genome_dict'], checkIfExists: true)
+
+    GATK_UNIFIEDGENOTYPER ( input, fasta, fai, dict, [], [], [], [])
+}
diff --git a/tests/modules/gatk/unifiedgenotyper/nextflow.config b/tests/modules/gatk/unifiedgenotyper/nextflow.config
new file mode 100644
index 00000000..50f50a7a
--- /dev/null
+++ b/tests/modules/gatk/unifiedgenotyper/nextflow.config
@@ -0,0 +1,5 @@
+process {
+
+    publishDir = { "${params.outdir}/${task.process.tokenize(':')[-1].tokenize('_')[0].toLowerCase()}" }
+    
+}
\ No newline at end of file
diff --git a/tests/modules/gatk/unifiedgenotyper/test.yml b/tests/modules/gatk/unifiedgenotyper/test.yml
new file mode 100644
index 00000000..498e7991
--- /dev/null
+++ b/tests/modules/gatk/unifiedgenotyper/test.yml
@@ -0,0 +1,9 @@
+- name: gatk unifiedgenotyper test_gatk_unifiedgenotyper
+  command: nextflow run ./tests/modules/gatk/unifiedgenotyper -entry test_gatk_unifiedgenotyper -c ./tests/config/nextflow.config  -c ./tests/modules/gatk/unifiedgenotyper/nextflow.config
+  tags:
+    - gatk
+    - gatk/unifiedgenotyper
+  files:
+    - path: output/gatk/test.vcf.gz
+      contains:
+        - "#CHROM	POS	ID	REF	ALT	QUAL	FILTER	INFO	FORMAT	test"