In T20 format captaincy plays a massive role and some great bowlers of this format have done a good job in this department as well.

Sri Lanka won their WT20 2014 title in Lasith Malinga's captaincy, Pakistan also did well under the leadership of Shahid Afridi and the likes of Daniel Vettori for New Zealand, Mashrafe Mortaza for Bangladesh and Stuart Broad for England too did a good job. And here is a list of most wickets, most five wickets haul, best averages and bowling figures as captain in T20I cricket. 

Most Wickets as captain in T20I cricket -

41 - Shahid Afridi (Pakistan, 44 Matches)

35 - Daniel Vettori (New Zealand, 28 Matches)

30 - Stuart Broad (England, 27 Matches)

30 - Lasith Malinga (Sri Lanka, 24 Matches)

27 - Pieter Seelar (the Netherlands, 30 Matches)

27 - Shakib Al Hasan (Bangladesh, 21 Matches)

25 - Amjad Javed (UAE, 14 Matches)

24 - Carlon Brathwaite (West Indies, 30 Matches)

22 - Amjad Mahboob (Singapore, 14 Matches)

20 - Mashrafe Mortaza (Bangladesh, 28 Matches)

20 - Mohammed Hafeez (Pakistan, 29 Matches)

20 - Charles Perchard (Jersey, 15 Matches)

20 - Darren Sammy (West Indies, 47 Matches)

Most Five Wickets Hauls as captain in T20I cricket -

1 - Lasith Malinga (Sri Lanka)

1 - Charles Perchard (Jersey)

1- Shakib al Hasan (Bangladesh) 

Best Bowling Averages as captain in T20I cricket (Min 20 wickets) -

13.75 - Charles Perchard (Jersey, 20 wickets)

14.68 - Amjad Javed (UAE, 25 wickets)

16.50 - Amjad Mahboob (Singapore, 22 wickets)

16.57 - Daniel Vettori (New Zealand, 35 wickets)

19.07 - Shakib Al Hasan (Bangladesh, 27 wickets)

21.16 - Lasith Malinga (Sri Lanka, 30 wickets)

23.66 - Pieter Seelar (the Netherlands, 27 wickets)

24.53 - Stuart Broad (England, 30 wickets)

27.29 - Shahid Afridi (Pakistan, 41 wickets)

27.65 - Mohammed Hafeez (Pakistan, 20 wickets)

Best Bowling Figures as captain in T20I cricket -

5/6 - Lasith Malinga (SL) vs NZ at Pallekele, 2019

5/17 - Charles Perchard (Jersey) vs Guernsey at Castel, 2019

5/20 - Shakib Al Hasan (BAN) vs WI at Dhaka, 2018 

4/5 - Mohammed Aslam (Kuwait) vs Iran at Al Amerat, 2020

4/7 - Zeeshan Maqsood (Oman) vs the Netherlands at Al Amerat, 2019

4/8 - Matthew Spry (Peru) vs Chile at Cortijo Polo Club, 2019

4/11 - Gayashan Munasinghe (Italy) vs Guernsey at St Peter Port, 2019

4/12 - Hernan Fennell (Argentina) vs Chile at Cortijo Polo Club, 2019

4/14 - Shahid Afridi (PAK) vs NZ at Christchurch, 2010

4/14 - Charles Perchard (Jersey) vs Italy at St Peter Port, 2019