diff --git a/app/controllers/speakers_controller.rb b/app/controllers/speakers_controller.rb
deleted file mode 100644
index d4cd28900..000000000
--- a/app/controllers/speakers_controller.rb
+++ /dev/null
@@ -1,28 +0,0 @@
-class SpeakersController < ApplicationController
-  include Secured
-
-  before_action :set_speaker, only: [:show]
-  before_action :set_profile
-
-  def logged_in_using_omniauth?
-    current_user
-  end
-
-  # GET /speakers
-  # GET /speakers.json
-  def index
-    @speakers = Speaker.all
-  end
-
-  # GET /speakers/1
-  # GET /speakers/1.json
-  def show
-  end
-
-  private
-
-  # Use callbacks to share common setup or constraints between actions.
-  def set_speaker
-    @speaker = Speaker.find(params[:id])
-  end
-end
diff --git a/app/views/speakers/_speaker.json.jbuilder b/app/views/speakers/_speaker.json.jbuilder
deleted file mode 100644
index f6c83c3bf..000000000
--- a/app/views/speakers/_speaker.json.jbuilder
+++ /dev/null
@@ -1,2 +0,0 @@
-json.extract!(speaker, :id, :name, :profile, :company, :job_title, :twitter_id, :github_id, :created_at, :updated_at)
-json.url(speaker_url(speaker, format: :json))
diff --git a/app/views/speakers/index.html.erb b/app/views/speakers/index.html.erb
deleted file mode 100644
index 1b7c61c85..000000000
--- a/app/views/speakers/index.html.erb
+++ /dev/null
@@ -1,38 +0,0 @@
-<div class="container">
-  <h1 class="my-3 text-center">登壇者</h1>
-    <% @speakers.each_slice(3) do |sliced_speakers| %>
-      <div class="row">
-        <% sliced_speakers.each do |speaker| %>
-          <div class="col-12 col-md-4 py-3">
-          <div class="card h-100">
-            <div class="avatar text-center">
-            <% if speaker.avatar_url.nil? %>
-                <%= image_tag 'dummy.png', :size => '80x80'  %>
-            <% else %>
-                <%= image_tag speaker.avatar_url(:small) || speaker.avatar_url, :size => '80x80'  %>
-            <% end %>
-            </div>
-            <div class="card-body">
-              <h5 class="card-title">
-                <%= speaker.name %>
-                <%= speaker.twitter_link %>
-                <%= speaker.github_link %>
-              </h5>
-              <h6 class="card-subtitle text-muted mb-1">
-                <%= speaker.company if speaker.company != "" %>
-              </h6>
-              <h6 class="card-subtitle text-muted mb-1">
-                <%= speaker.job_title if speaker.job_title != "" %>
-              </h6>
-              <% if speaker.profile != "" %>
-                <p class="card-text"><%= speaker.profile %></p>
-              <% end %>
-
-              <%  %>
-            </div>
-          </div>
-          </div>
-        <% end %>
-    </div>
-    <% end %>
-</div>
diff --git a/app/views/speakers/index.json.jbuilder b/app/views/speakers/index.json.jbuilder
deleted file mode 100644
index 3d974463c..000000000
--- a/app/views/speakers/index.json.jbuilder
+++ /dev/null
@@ -1 +0,0 @@
-json.array!(@speakers, partial: 'speakers/speaker', as: :speaker)
diff --git a/app/views/speakers/show.html.erb b/app/views/speakers/show.html.erb
deleted file mode 100644
index 755283dc4..000000000
--- a/app/views/speakers/show.html.erb
+++ /dev/null
@@ -1,29 +0,0 @@
-<p id="notice"><%= notice %></p>
-
-<div class="container py-3">
-  <div class="card">
-    <div class="card-body">
-      <h5 class="card-title"><%= @speaker.name %></h5>
-      <% if @speaker.avatar_url.nil? %>
-        <%= image_tag "dummy.png", :size => '90x90'  %>
-      <% else %>
-        <%= image_tag @speaker.avatar_url(:small) || @speaker.avatar_url, :size => '90x90'  %>
-      <% end %>
-      <% if @speaker.profile != "" %>
-        <p class="card-text">Profile: <%= @speaker.profile %></p>
-      <% end %>
-      <% if @speaker.company != "" %>
-        <p class="card-text">Company: <%= @speaker.company %></p>
-      <% end %>
-      <% if @speaker.job_title != "" %>
-        <p class="card-text">Job Title: <%= @speaker.job_title %></p>
-      <% end %>
-      <% if @speaker.twitter_id != "" %>
-        <p class="card-text">X(Twitter): <a href="https://twitter.com/<%= @speaker.twitter_id %>"><%= @speaker.twitter_id %></a></p>
-      <% end %>
-      <% if @speaker.github_id != "" %>
-        <p class="card-text">Github: <a href="https://github.com/<%= @speaker.github_id %>"><%= @speaker.github_id %></a></p>
-      <% end %>
-    </div>
-  </div>
-</div>
diff --git a/app/views/speakers/show.json.jbuilder b/app/views/speakers/show.json.jbuilder
deleted file mode 100644
index 11e9f5111..000000000
--- a/app/views/speakers/show.json.jbuilder
+++ /dev/null
@@ -1 +0,0 @@
-json.partial!('speakers/speaker', speaker: @speaker)
diff --git a/config/routes.rb b/config/routes.rb
index de8e779f1..930464332 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -94,7 +94,6 @@
 
     get '/speakers/entry' => 'speaker_dashboard/speakers#new'
     get '/speakers/guidance' => 'speaker_dashboard/speakers#guidance'
-    resources :speakers, only: [:index, :show]
     get '/speaker_dashboard' => 'speaker_dashboards#show'
     namespace :speaker_dashboard do
       resources :speakers, only: [:new, :edit, :create, :update]