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== Pelaksana tugas ==
Berikut ini adalah daftar Pelaksana Tugas yang menggantikan Gubernur definitif saat sedang cuti kampanye atau dalam masa transisi
{| class="wikitable" style="background:#; float:center; text-align:center"
|-
| align="center" colspan="2"|'''Potret'''
|align="center"|'''Gubernur Definitif'''
|-
| bgcolor="#BD2016"{{Partai Nasional Indonesia/meta/color}}"|
| [[Berkas:Sarimin Reksodihardjo.jpg|70px]]
| align="center"|[[Sarimin Reksodihardjo]]<br/><small>(Penjabat)</small>
| align="center"| 14 Agustus 1950
| align="center"| 25 Januari 1951
| 2
| align="center"| 2
|
| align="center"|''Transisi''
|-
| bgcolor={{Partai Demokrasi Indonesia Perjuangan/meta/color}}|
| bgcolor="#BD2016" |
| [[Berkas:Rudolf Pardede as Member of the People's Consultative Assembly.jpg|70px]]
| align="center"|[[Rudolf Pardede]]<br/><small>(Pelaksana Tugas)</small>
| align="center"| 5 September 2005
| align="center"| 10 Maret 2006
| align="center"| 16 <br/> (2003)
| align="center"| <ref>{{cite news|url=http://www.rulers.org/2005-09.html|title=The governor of Sumatera Utara, Rizal Nurdin, and his predecessor (1988-98), Raja Inal Siregar, die in a plane crash. Deputy Governor Rudolf Pardede is appointed acting governor|newspaper=Rules|access-date=15 November 2015|date=September 2015|archive-date=2016-01-18|archive-url=https://web.archive.org/web/20160118105651/http://rulers.org/2005-09.html|dead-url=no}}</ref>
| align="center"|[[Tengku Rizal Nurdin]]
|-
| bgcolor="#000000"{{Partai Keadilan Sejahtera/meta/color}}|
| [[Berkas:Gatot Pujo Nugroho, 2013.jpg|70px]]
| align="center"|[[Gatot Pujo Nugroho]]<br/><small>(Pelaksana Tugas)</small>
| align="center"| 21 Maret 2011
| align="center"| 14 Maret 2013
| align="center"| 17 <br/> (2008)
| align="center"| <ref>{{cite news|url=http://www.rulers.org/2005-09.html|title=The governor of Sumatera Utara, Rizal Nurdin, and his predecessor (1988-98), Raja Inal Siregar, die in a plane crash. Deputy Governor Rudolf Pardede is appointed acting governor|newspaper=Rules|access-date=15 November 2015|date=September 2015|archive-date=2016-01-18|archive-url=https://web.archive.org/web/20160118105651/http://rulers.org/2005-09.html|dead-url=no}}</ref>
| align="center"|[[Syamsul Arifin]]
|-
| bgcolor="#FFFF00"{{Partai Golongan Karya/meta/color}}|
| [[Berkas:Foto-Gubsu-H.-T.-Erry-Nuradi.jpg|70px]]
| align="center"|[[Tengku Erry Nuradi]]<br/><small>(Pelaksana Tugas)</small>
| align="center"| 11 Agustus 2015
| align="center"| 25 Mei 2016
| align="center"| 18 <br/> (2013)
| align="center"|{{refn|group=ket.|Pelaksana Tugas Gubernur, Tengku Erry sepenuhnya diberikan tanggungjawab untuk melaksanakan tugas-tugas gubernur pada 10 Agustus, yang ditinggalkan Gatot Pudjo Nugroho, setelah ditetapkapkan sebagai tahanan Komisi Pemberantasan Korupsi (KPK) atas kasus penyuapan Hakim PTUN Medan}}<br><ref>{{cite news|url=http://news.okezone.com/read/2015/08/10/340/1193791/besok-tengku-erry-resmi-gantikan-tugas-gatot-pujo-nugroho|title=Besok Tengku Erry Resmi Gantikan Tugas Gatot Pujo Nugroho|first=Akbar|last=Dongoran|date=10 Agustus 2015|access-date=15 November 2015|newspaper=OkeZone.com|location=Medan|archive-date=2015-11-17|archive-url=https://web.archive.org/web/20151117031430/http://news.okezone.com/read/2015/08/10/340/1193791/besok-tengku-erry-resmi-gantikan-tugas-gatot-pujo-nugroho|dead-url=no}}</ref><ref>{{cite news|url=http://www.thejakartapost.com/news/2015/08/11/tengku-erry-appointed-n-sumatra-acting-governor.html|title=Tengku Erry appointed as N. Sumatra acting governor|first=Apriadi|last=Gunawan|date=11 Agustus 2015|access-date=15 November 2015|newspaper=The Jakarta Post|location=Medan|archive-date=2015-11-17|archive-url=https://web.archive.org/web/20151117033040/http://www.thejakartapost.com/news/2015/08/11/tengku-erry-appointed-n-sumatra-acting-governor.html|dead-url=no}}</ref><ref>{{cite news|url=http://www.jpnn.com/read/2015/08/08/319339/Senin,-Tengku-Erry-Mulai-jadi-Pelaksana-Tugas-Gubernur-Sumut-|title=Senin, Tengku Erry Mulai jadi Pelaksana Tugas Gubernur Sumut|date=8 Agustus 2015|access-date=15 November 2015|newspaper=Jawa Pos National Network|last=GIR|last2=Kusdharmadi|location=Jatinangor|archive-date=2015-11-17|archive-url=https://web.archive.org/web/20151117014829/http://www.jpnn.com/read/2015/08/08/319339/Senin,-Tengku-Erry-Mulai-jadi-Pelaksana-Tugas-Gubernur-Sumut-|dead-url=no}}</ref>
| align="center"|[[Gatot Pujo Nugroho]]
|-
| bgcolor="#D3D3D3" {{Independen/meta/color}}|
| [[File:Sekda Sabrina (Indonesian Civil Servants Corps) (cropped).jpg|70px]]
| align="center"|[[R. Sabrina]]<br/><small>(Pelaksana Harian)</small>
| align="center"| 16 Juni 2018
| align="center"| 22 Juni 2018
| align="center"|—
| align="center"| <ref>{{cite news |url=https://www.inews.id/daerah/sumut/155557/jabatan-erry-berakhir-sekda-provinsi-sabrina-jadi-plh-gubernur-sumut |title=Jabatan Erry Berakhir, Sekda Provinsi Sabrina Jadi Plh Gubernur Sumut |date=18 Juni 2018 |access-date=26 Juni 2018 |newspaper=iNews |first=Stepanus |last=Purba |editor-first=Maria |editor-last=Christina }}{{Pranala mati|date=Februari 2022 |bot=InternetArchiveBot |fix-attempted=yes }}</ref><ref>{{cite news |url=https://bisnis.tempo.co/read/1099809/tragedi-danau-toba-ini-imbauan-gubernur-sumatera-utara?BisnisUtama&campaign=BisnisUtama_Click_1 |title=Tragedi Danau Toba, Ini Imbauan Gubernur Sumatera Utara |date=22 Juni 2018 |access-date=26 Juni 2018 |newspaper=Tempo.co |first= |last= |editor-first=Rr. Ariyani Yakti |editor-last=Widyastuti |archive-date=2018-06-26 |archive-url=https://web.archive.org/web/20180626192355/https://bisnis.tempo.co/read/1099809/tragedi-danau-toba-ini-imbauan-gubernur-sumatera-utara?BisnisUtama&campaign=BisnisUtama_Click_1 |dead-url=no }}</ref>
| align="center"|''Transisi''
|-
| bgcolor="#D3D3D3" {{Independen/meta/color}}|
| [[Berkas:Penjabat Gubernur Sumatera Utara Eko Subowo.jpg|70px]]
| align="center"|[[Eko Subowo]]<br/><small>(Penjabat)</small>
| align="center"| 22 Juni 2018
| align="center"| 5 September 2018
| align="center"|—
| align="center"| <ref>{{cite news |url=http://www.sumutprov.go.id/berita-lainnya/2685-laksanakan-tugas-pertama-mendagri-pj-gubsu-tinjau-langsung-lokasi-tenggelamnya-km-sinar-bangun-di-danau-toba |title=Laksanakan Tugas Pertama Mendagri, Pj. Gubsu Tinjau Langsung Lokasi Tenggelamnya KM Sinar Bangun di Danau Toba |date=23 Juni 2018 |access-date=23 Juni 2018 |newspaper=Humas Pemerintah Provinsi Sumatera Utara |first= |last=Riva |editor-first= |editor-last= |archive-date=2018-06-24 |archive-url=https://web.archive.org/web/20180624181133/http://www.sumutprov.go.id/berita-lainnya/2685-laksanakan-tugas-pertama-mendagri-pj-gubsu-tinjau-langsung-lokasi-tenggelamnya-km-sinar-bangun-di-danau-toba |dead-url=yes }}</ref>
| align="center"|''Transisi''
|-
| bgcolor="#D3D3D3" {{Independen/meta/color}}|
| [[Berkas:Pj. Gubsu Hassanudin.jpg|70px]]
| align="center"|[[Hassanudin]]<br/><small>(Penjabat)</small>
| align="center"| 5 September 2023
| align="center"| 24 Juni 2024
| align="center"|—
|
| align="center"|''Transisi''
|-
| bgcolor="#D3D3D3" {{Independen/meta/color}}|
| [[Berkas:Agus Fatoni, Pj. Gubernur Sumatera Utara (2024).jpg|70px]]
| align="center"|[[Agus Fatoni]]<br/><small>(Penjabat)</small>
| align="center"| 24 Juni 2024
| align="center"|''[[Daftar gubernur dan wakil gubernur di Indonesia|Petahana]]''
| align="center"|—
|
| align="center"|''Transisi''
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