The African Democratic Party of Guinea (), initially called Democratic Party of Guinea-Ahmed Sékou Touré (Parti démocratique de Guinée-Ahmed Sékou Touré) is a political party in Guinea. PDG-AST was founded in January 1994, following a split in the Democratic Party of Guinea-African Democratic Rally (PDG-RDA). The party was led by Marcel Cross, father-in-law of Toure's son Mohammed.
In the lead-up to the split in PDG-RDA, the PDG-AST founders largely centered their criticism against the party leader Ismael Gushein, whom they accused of 'political scheming'. In the bitterness around the party split, PDG-RDA branded PDG-AST as 'traitors'. PDG-AST upheld the legacy of the 12th PDG party congress, which had opened up for political and economic reforms. PDG-AST had a following among Malinke officers purged after the end of Sekou Toure's rule.
In May 1994, PDG-AST formed a pact with the National Democratic Union of Guinea.
{| class="wikitable"
|+PDG-AST in the 1995 legislative election
!Region
!Constituency
!Votes
!%
|-
|rowspan=5|Boké
|Boké
|829
|1.44
|-
|Boffa
|60
|0.10
|-
|Fria
|255
|1.21
|-
|Gaoual
|413
|1.38
|-
|Koundara
|451
|2.00
|-
|rowspan=5|Kindia
|Kindia
|742
|0.87
|-
|Télimélé
|691
|0.98
|-
|Coyah
|204
|1.01
|-
|Forécariah
|235
|0.41
|-
|Dubréka
|3
|0.01
|-
|rowspan=3|Mamou
|Mamou
|919
|1.49
|-
|Dalaba
|839
|2.20
|-
|Pita
|1,219
|1.84
|-
|rowspan=5|Labé
|Labé
|1,655
|2.35
|-
|Mali
|829
|1.28
|-
|Tougué
|515
|1.62
|-
|Koubia
|637
|2.49
|-
|Lélouma
|935
|2.44
|-
|rowspan=4|Faranah
|Faranah
|896
|1.69
|-
|Kissidougou
|572
|0.95
|-
|Dabola
|651
|2.48
|-
|Dingulraye
|530
|1.58
|-
|rowspan=5|Kankan
|Kankan
|469
|0.64
|-
|Koumussa
|461
|1.02
|-
|Siguiri
|811
|1.15
|-
|Kerouane
|417
|1.14
|-
|Mandiana
|1,107
|2.23
|-
|rowspan=6|Nzérékoré
|N'Zerekore
|533
|0.70
|-
|Macenta
|353
|0.65
|-
|Gueckedou
|480
|0.70
|-
|Beyla
|532
|1.07
|-
|Lola
|270
|0.81
|-
|Yomou
|176
|0.63
|-
|rowspan=5|Conakry
|Kaloum
|211
|0.80
|-
|Dixinn
|194
|0.53
|-
|Ratoma
|198
|0.38
|-
|Matam
|263
|0.67
|-
|Matoto
|678
|1.02
|-
|colspan=2|Total
|21,233
|1.15
|}
Subsequently, the Supreme Court, based on a request from PDG-RDA, withdrew the registration of PDG-AST as a political party. The party subsequently took the name PDAG.
Ahead of the 1998 Guinean presidential election, PDAG had entered a pact to support the candidature of RPG leader Alpha Condé. The day before the election, security forces raided Cross' residence, arrested him and claimed that he was amassing arms for a coup d'état.