Eight ileal-cannulated barrows (initial BW = 23.5 ± 0.85 kg) were used to determine the apparent (AID) and standardized (SID) ileal AA digestibilities in high protein sunflower meal (HiPSF) and pea protein isolate (PPI) with or without multi-carbohydrase enzyme (MC) supplementation. Pigs were randomly assigned to 1 of 5 treatments in a replicated 4 × 5 incomplete Latin square design to give 8 observations per treatment. The experimental diets consisted of HiPSF or PPI as the sole source of protein with or without MC and a low-protein diet (5% casein) used to quantify endogenous AA losses. All diets contained titanium dioxide (0.3%) as indigestible marker. Pigs were given their daily feed allowance at a rate of 4.5% of BW determined at the beginning of each experimental period. Each experimental period lasted 7 d and the ileal digesta were collected on d 6 and 7. All data were analyzed using the MIXED procedure of SAS (SAS Inst. Inc., Cary, NC). The model included diet as the fixed variable and animal and period as the random variables. In general, AA digestibilities were higher in PPI than in HiPSF, with the exception of Met and Cys (P > 0.05). There was no effect of MC (P > 0.05) on AA digestibility. The AID and SID of essential AA in HiPSF and PPI (without MC) were, respectively: Arg, 83.2, 87.8 and 90.0, 94.2; His, 29.6, 40.3 and 50.0, 60.5; Ile, 73.9, 79.8 and 83.1, 88.6; Leu, 72.9, 78.0 and 83.4, 87.7; Lys, 66.1, 72.6 and 88.3, 91.4; Met, 82.1, 86.0 and 80.8, 87.3; Phe, 75.5, 79.0 and 83.0, 86.1; Thr, 62.3, 72.9 and 72.6, 82.6; Val, 70.1, 76.1 and 79.2, 85.0. The MC increased (P < 0.01) the AID and SID of Proline (75.37 vs 82.14% and 86.82 vs 93.66%, respectively) in PPI. Compared with HiPSF, PPI had better digestible AA profile for growing pigs. However, no differences were detected for the digestibility of most AA when diets were supplemented with MC.