diff --git a/app/graphql/resolvers/base_resolver.rb b/app/graphql/resolvers/base_resolver.rb
index 31850c2cadba9ec82b1bc3b80cf78a9ac7767303..5b7eb57841c9fe3ef899aa8458edaafe3c586a29 100644
--- a/app/graphql/resolvers/base_resolver.rb
+++ b/app/graphql/resolvers/base_resolver.rb
@@ -10,7 +10,7 @@ module Resolvers
       end
     end
 
-    def self.resolver_complexity(args)
+    def self.resolver_complexity(args, child_complexity:)
       complexity = 1
       complexity += 1 if args[:sort]
       complexity += 5 if args[:search]
diff --git a/app/graphql/resolvers/concerns/resolves_pipelines.rb b/app/graphql/resolvers/concerns/resolves_pipelines.rb
index a166211fc1899926cce020dc620df2b068b052a6..a6f82cc8505612eb11b21599fe854bd6a573cf82 100644
--- a/app/graphql/resolvers/concerns/resolves_pipelines.rb
+++ b/app/graphql/resolvers/concerns/resolves_pipelines.rb
@@ -20,7 +20,7 @@ module ResolvesPipelines
   end
 
   class_methods do
-    def resolver_complexity(args)
+    def resolver_complexity(args, child_complexity:)
       complexity = super
       complexity += 2 if args[:sha]
       complexity += 2 if args[:ref]
diff --git a/app/graphql/resolvers/issues_resolver.rb b/app/graphql/resolvers/issues_resolver.rb
index f7e49166ca041c8e0120fc97380c1c5719c9dd88..3ee3849f483cb527d0879195baaa402c0023beff 100644
--- a/app/graphql/resolvers/issues_resolver.rb
+++ b/app/graphql/resolvers/issues_resolver.rb
@@ -58,7 +58,7 @@ module Resolvers
       IssuesFinder.new(context[:current_user], args).execute
     end
 
-    def self.resolver_complexity(args)
+    def self.resolver_complexity(args, child_complexity:)
       complexity = super
       complexity += 2 if args[:labelName]
 
diff --git a/app/graphql/types/base_field.rb b/app/graphql/types/base_field.rb
index 153311291346b27fd2a7e5f25f0ab10010151013..a374851e8356e3300cfef8e88576f2ac16a88942 100644
--- a/app/graphql/types/base_field.rb
+++ b/app/graphql/types/base_field.rb
@@ -33,7 +33,7 @@ module Types
         limit_value = [args[:first], args[:last], page_size].compact.min
 
         # Resolvers may add extra complexity depending on used arguments
-        complexity = child_complexity + self.resolver&.try(:resolver_complexity, args).to_i
+        complexity = child_complexity + self.resolver&.try(:resolver_complexity, args, child_complexity: child_complexity).to_i
 
         # Resolvers may add extra complexity depending on number of items being loaded.
         multiplier = self.resolver&.try(:complexity_multiplier, args).to_f
diff --git a/app/graphql/types/issue_type.rb b/app/graphql/types/issue_type.rb
index b21a226d07fee4a614de57e1b579d5cbb50c6a64..dd5133189dc92e19e23393d99ae1ef4343483e7d 100644
--- a/app/graphql/types/issue_type.rb
+++ b/app/graphql/types/issue_type.rb
@@ -15,6 +15,10 @@ module Types
     field :description, GraphQL::STRING_TYPE, null: true
     field :state, IssueStateEnum, null: false
 
+    field :reference, GraphQL::STRING_TYPE, null: false, method: :to_reference do
+      argument :full, GraphQL::BOOLEAN_TYPE, required: false, default_value: false
+    end
+
     field :author, Types::UserType,
           null: false,
           resolve: -> (obj, _args, _ctx) { Gitlab::Graphql::Loaders::BatchModelLoader.new(User, obj.author_id).find }
@@ -37,7 +41,9 @@ module Types
     field :upvotes, GraphQL::INT_TYPE, null: false
     field :downvotes, GraphQL::INT_TYPE, null: false
     field :user_notes_count, GraphQL::INT_TYPE, null: false
+    field :web_path, GraphQL::STRING_TYPE, null: false, method: :issue_path
     field :web_url, GraphQL::STRING_TYPE, null: false
+    field :relative_position, GraphQL::INT_TYPE, null: true
 
     field :closed_at, Types::TimeType, null: true
 
diff --git a/app/presenters/issue_presenter.rb b/app/presenters/issue_presenter.rb
index c12a202efbc52f974984b8b8ace40a8db80728b8..c9dc0dbf443d1beea40d20fd628bda660497d827 100644
--- a/app/presenters/issue_presenter.rb
+++ b/app/presenters/issue_presenter.rb
@@ -4,6 +4,16 @@ class IssuePresenter < Gitlab::View::Presenter::Delegated
   presents :issue
 
   def web_url
-    Gitlab::UrlBuilder.build(issue)
+    url_builder.url
+  end
+
+  def issue_path
+    url_builder.issue_path(issue)
+  end
+
+  private
+
+  def url_builder
+    @url_builder ||= Gitlab::UrlBuilder.new(issue)
   end
 end
diff --git a/changelogs/unreleased/10795-add-epic-tree-BE-CE-epic-graphql-support.yml b/changelogs/unreleased/10795-add-epic-tree-BE-CE-epic-graphql-support.yml
new file mode 100644
index 0000000000000000000000000000000000000000..4c85d4f9acbbcd33f4a6a2abf76336cf74d7c188
--- /dev/null
+++ b/changelogs/unreleased/10795-add-epic-tree-BE-CE-epic-graphql-support.yml
@@ -0,0 +1,5 @@
+---
+title: Added reference, web_path, and relative_position fields to GraphQL Issue
+merge_request: 28998
+author:
+type: changed
diff --git a/spec/graphql/types/base_field_spec.rb b/spec/graphql/types/base_field_spec.rb
index 4fe426e244753fbaec0b677b2f67a85e192de218..a7fb156d9a86c3a9025c23a77747836f5e58cea3 100644
--- a/spec/graphql/types/base_field_spec.rb
+++ b/spec/graphql/types/base_field_spec.rb
@@ -6,7 +6,7 @@ describe Types::BaseField do
   context 'when considering complexity' do
     let(:resolver) do
       Class.new(described_class) do
-        def self.resolver_complexity(args)
+        def self.resolver_complexity(args, child_complexity:)
           2 if args[:foo]
         end
 
diff --git a/spec/graphql/types/issue_type_spec.rb b/spec/graphql/types/issue_type_spec.rb
index dc37b15001fec79a45f91def289cc0d6f21abeb5..bae560829cce3e4c3f447c5005dad2a9bc324040 100644
--- a/spec/graphql/types/issue_type_spec.rb
+++ b/spec/graphql/types/issue_type_spec.rb
@@ -6,4 +6,10 @@ describe GitlabSchema.types['Issue'] do
   it { expect(described_class.graphql_name).to eq('Issue') }
 
   it { expect(described_class).to require_graphql_authorizations(:read_issue) }
+
+  it 'has specific fields' do
+    %i[relative_position web_path web_url reference].each do |field_name|
+      expect(described_class).to have_graphql_field(field_name)
+    end
+  end
 end
diff --git a/spec/presenters/issue_presenter_spec.rb b/spec/presenters/issue_presenter_spec.rb
new file mode 100644
index 0000000000000000000000000000000000000000..8e24559341b2da646a3397b5aec592bad7c12d16
--- /dev/null
+++ b/spec/presenters/issue_presenter_spec.rb
@@ -0,0 +1,29 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe IssuePresenter do
+  include Gitlab::Routing.url_helpers
+
+  let(:user)      { create(:user) }
+  let(:group)     { create(:group) }
+  let(:project)   { create(:project, group: group) }
+  let(:issue)     { create(:issue, project: project) }
+  let(:presenter) { described_class.new(issue, current_user: user) }
+
+  before do
+    group.add_developer(user)
+  end
+
+  describe '#web_url' do
+    it 'returns correct path' do
+      expect(presenter.web_url).to eq "http://localhost/#{group.name}/#{project.name}/issues/#{issue.iid}"
+    end
+  end
+
+  describe '#issue_path' do
+    it 'returns correct path' do
+      expect(presenter.issue_path).to eq "/#{group.name}/#{project.name}/issues/#{issue.iid}"
+    end
+  end
+end